Entries |
Document | Title | Date |
20080218405 | Mobile terminals including location management systems and location management methods for mobile terminals - Methods of managing a location of a mobile terminal include obtaining a position of the mobile terminal, estimating a distance from the mobile terminal to a destination point, generating an estimated time for the mobile terminal to reach the destination point, and generating an alert if the estimated time for the mobile terminal to reach the destination point reaches a threshold time. Related mobile terminals are also disclosed. | 09-11-2008 |
20080224917 | APPARATUS AND METHOD FOR TRACING POSITION AND DIRECTION OF TARGET OBJECT THROUGH RF SIGNAL - An apparatus for tracing position and direction of a target object through an RF signal includes two loop antennas and a position and direction determination part. The two loop antennas receive the RF signal transmitted from the target object and are perpendicularly coupled to each other. The position and direction determination part calculates two RF signal intensities received through the respective two loop antennas for comparison, and then determines that the target object transmitting an RF signal is placed in a center direction between the two loop antennas if the two RF signal intensities are the same, and otherwise determines that the target object is placed in a front direction of the loop antenna having a relatively higher RF signal intensity. | 09-18-2008 |
20080231499 | LOCATION TRACKING OF MOBILE PHONE USING GPS FUNCTION - A system, method, service and mobile device are disclosed for providing a location of the mobile device. The invention utilizes a mobile phone with a global positioning system (GPS) module which is located in a wireless network. A third party device is able to submit a location query to a mobile telephone service operator (MTSO). This location query includes the mobile phone's telephone number. Using the telephone number, the MTSO determines the base station with which the mobile phone is associated. The location query is then forwarded to the mobile phone via the base station. The mobile phone collects the GPS data from the GPS module and forwards the GPS data to the base station. The base station converts the GPS data to location information and forwards the location information to the third party device via the MTSO. | 09-25-2008 |
20090015463 | Monopulse Radar System for Motor Vehicles - A radar system for measuring the angular position of a remote object has an antenna which is provided with at least two receiving antennae, a transmitter connected to the antenna for transmitting a transmitted signal, a first receiver connected to the first reception antenna for receiving the transmitted signal reflected by the remote object in the form of a first received signal, and a second receiver connected to the second reception antenna for receiving the transmitted signal reflected by the remote object in the form of a second received signal. The first receiver is provided with a first element for determining the first phase of the first received signal and the second receiver is provided with a second element for determining the second phase of the second received signal. | 01-15-2009 |
20090079617 | DETECTION AND RANGING APPARTUS AND DETECTION AND RANGING METHOD - In a detection and ranging apparatus that performs direction-of-arrival estimation using a sensor array and that enlarges an effective aperture using a plurality of transmitting sensors, adverse effects associated with time division switching are eliminated, achieving high-accuracy measurement. A transmitter wave is spread in modulators by using mutually orthogonal codes, and the resulting transmitter waves are radiated from two transmitting sensors. Signals received by receiving sensors are each split by a splitter into two parts, which are then respectively despread in a demodulator by using the same codes as those used in the transmitter. | 03-26-2009 |
20090135050 | AUTOMOTIVE RADAR SYSTEM - An automotive radar system having a high frequency radio transmitter which generates a radar signal in a known direction. A high frequency radio receiver receives echoes from the radar signal in which each echo represents a reflection of the radar signal from an object. A processor then identifies animate objects, if any, from the received echoes within a range of interest and generates an alert signal for each such identified animate object. | 05-28-2009 |
20090195439 | METHOD, US OF SAID METHOD AND ARRANGEMENTS IN AN ELECTRONIC SUPPORT MEASURES SYSTEM - A method and arrangement for processing signals emitted by a plurality of apparent emitters that is detected by an Electronic Measures System/Direction Finder unit (ESM | 08-06-2009 |
20090201194 | DUAL MODE RADAR METHODS AND SYSTEMS - One embodiment relates to a dual mode radar transceiver. The dual mode transceiver includes a plurality of transmit channels. Each of the plurality of transmit channels is adapted to switch between a first mode and a second mode. The first mode includes a first combination of the plurality of transmit channels adapted to concurrently transmit outgoing signals. The second mode includes a plurality of different combinations of the plurality of transmit channels. Each of the plurality of different combinations has fewer transmit channels than the first combination. Other methods and systems are also disclosed. | 08-13-2009 |
20090219194 | Method and apparatus for determining whether a moving entity is moving in a predetermined direction - The present invention relates to a method and an apparatus for determining whether a moving entity is moving in a predetermined direction. A moving entity being equipped with positioning means receives data from a sender comprising information about a position of a point of interest and a position of a reference point. Based on the received data, a first position of the moving entity at a first point in time, and a second position of the moving entity at a second point in time, it is determined whether the moving entity is moving in the predetermined direction. Preferably, angular information is utilized to verify whether the moving entity is moving in the predetermined direction. | 09-03-2009 |
20090237293 | Recognition system for vehicle - In a recognition system for a vehicle, forward vehicle information and infrastructural information are checked together and with respect to information that can be considered to pertain to one and the same vehicle. Pieces of information on position and speed are averaged to acquire the information of the vehicle. Pieces of information that can be considered to pertain to one and the same vehicle are searched for and integrated into one. Further, estimated values of speed and position in the future are corrected using traveling information. Then identical lane probability and collision time are estimated, and information of the subject vehicle is transmitted to a vehicle on a potential collision course. | 09-24-2009 |
20090267823 | POSITION ESTIMATING SYSTEM, POSITION ESTIMATING METHOD, POSITION ESTIMATING DEVICE AND ITS PROGRAM - A position estimating device ( | 10-29-2009 |
20090273507 | Stepped frequency radar - A multi-port junction is fed with a frequency-stepped source and has one of its ports connected to an antenna that can serve either as a transmit-and-receive antenna or as a receive antenna only, with the outputs of the multi-port junction being used to estimate a complex reflection coefficient for each frequency of interest. The subject system requires no IF stages, down-conversion mixers or oscillators, and therefore may be provided adjacent each antenna at low cost. An embodiment involving co-located separate transmit and receive antennas is used to minimize the power requirements for the multi-port junction, whereas in a third embodiment, an array of transmit/receive antennas is used, fed by the same RF source but in which digitally-controlled phase shifters are used for beam-forming purposes. | 11-05-2009 |
20090303107 | Azimuth detecting apparatus and radar apparatus - In an azimuth detecting apparatus, a receiver includes a plurality of first antenna elements and a second antenna element. The first antenna elements are arranged at first intervals d | 12-10-2009 |
20100039312 | Method and device for determining a position of a communication apparatus - A method and a device for determining a position of a communication apparatus is provided. To determine a position of a first apparatus a first signal is transmitted from a second apparatus to the first apparatus. A second signal is then transmitted from the first apparatus to the second apparatus as a response to the first signal, the first signal and the second signal being transmitted by way of at least two different mediums. Signal strength of the second signal received by the second apparatus and a transfer time from a first time of transmission of the first signal to a second time of receipt of the second signal are measured. The position of the first apparatus is finally calculated as a function of the measured signal strength of the received second signal and the measured transfer time. | 02-18-2010 |
20100073218 | METHOD AND APPARATUS FOR RADAR SURVEILLANCE AND DETECTION OF SEA TARGETS - In a radar system that detects relatively fast moving targets using a radar clutter map comprising a plurality of range-azimuth cells containing parameter data values indicative of time averaged echo returns for affecting alarm threshold levels at range-azimuth locations scanned by the radar system antenna, a method for detecting relatively slow moving targets in a substantially homogeneous surveillance region, the method comprising the steps of obtaining from the radar clutter map a value corresponding to parameter data of a given cell under test (CUT); determining a second parameter data value using parameter data values of other cells from the plurality of range-azimuth cells from the radar clutter map; comparing the parameter data value of the CUT with the second parameter data value; and generating a signal indicative of a target detection when the CUT parameter data value exceeds the second parameter data value by a given threshold corresponding to a target false alarm rate. | 03-25-2010 |
20100188282 | DEVICE FOR MONITORING THE POSITION OF A TOOL OR MACHINE ELEMENT - In a device for monitoring the position of a tool or machine element on or in a work spindle or tool chuck, in particular, in a machining apparatus, the work spindle or tool chuck has at least one channel that defines a waveguide, which is suitable for propagating electromagnetic waves, that leads from an external surface of the work spindle or tool chuck to the tool or machine element. At least one radar system is provided and arranged outside the work spindle or tool chuck in such a manner that it is capable of irradiating a radar signal from the outer surface into the channel and or receiving a radar signal reflected back from the channel. The radar signal is connected to a signal-processing device that determines a measure of the position of the tool or machine element relative to the work spindle or tool chuck based on at least one radar signal irradiated into the channel and reflected back from the channel. | 07-29-2010 |
20110006943 | SCANNING ARRAY FOR OBSTACLE DETECTION AND COLLISION AVOIDANCE - This scanning array scans an area around the array for nearby objects, collision obstructions, and terrain topography. The scanning array can scan for sounds emitted by objects in the vicinity of the scanning array, passive energy receipt sources, or it can also send out an energy beam and scan for reflections from objects within the energy beam. The energy beam can be optical, laser, radar or other energy emitting sources. The scanning array of the invention can be used for helicopter detection and avoidance of collision risk and can be used for other scanning purposes. Scanning of an entire hemisphere or greater is accomplished by manipulating the scanner platform through the coordination of either linear actuators or gimbals so as to produce nutation without rotation. This motion allows transceivers to be directly coupled to transmitting and sensing modules without the losses associated with slip rings and other coupling devices. | 01-13-2011 |
20110012775 | Locating System - The invention provides an antenna capable of performance similar to a Yagi-Uda antenna. However, unlike a conventional Yagi Uda antenna, the antenna of the invention is implementable on a substrate and thereby provides a directional antenna capable of disposition within a slender housing such as a cellular communications device. One embodiment of the invention provides an antenna comprising a substrate including a ground plane. The ground plane comprises a base portion and a spine portion extending from the base portion along a central axis of the substrate. A driven antenna element is disposed on a portion of the substrate and coupled to the spine portion to form a first antenna dipole. At least one antenna director element is disposed on a portion of the substrate and coupled to the spine portion to form a second antenna dipole. A reflector element comprises a portion of the ground plane. | 01-20-2011 |
20110050485 | METHOD FOR CROSS-RANGE ENHANCEMENT OF REAL-BEAM RADAR IMAGERY - Methods and apparatus for enhancing the resolution of a radar image in the cross-range direction. An example method includes receiving a plurality of received power samples in the cross-range dimension as the radar antenna scans and calculating a window function from the antenna beam response pattern. Then for each of a plurality of positions of the window function along the azimuth axis, multiplying the received response pattern by the window function at that position, yielding a product function for each position. Finally, the method includes calculating an estimated azimuth bin offset, resulting estimated target location, and a reflected power value corresponding to the integral of the product function from the product function of each position. A reconstructed azimuth bin array developed from the estimated target locations and reflected power values is substituted for the original received cross-range received power values, yielding a resolution-enhanced map image. | 03-03-2011 |
20110084872 | SIGNAL PROCESSING APPARATUS AND RADAR APPARATUS - A signal processing apparatus of a radar transceiver is provided. The radar transceiver transmits a frequency-modulated transmission signal and generates beat signals having a frequency difference between transmitted/received signals for respective receiving antennas. A distance detection section detects relative distances of objects based on frequencies of the beat signals. A phase detection section detects phases of the beat signals. A level storage section stores a first level of the beat signals that corresponds to the first object and a second level of the beat signals that corresponds to the second object when the beat signals are generated corresponding to the plurality of objects, respectively. A phase derivation section derives first and second phases in which the level of a single beat signal coincides with a sum of the first level corresponding to the first phase and the second level corresponding to the second phase on the basis of the wavelength of the beat signal and the relative distances of the plurality of objects, when the signal beat signal is generated corresponding to the plurality of objects. An azimuth angle detection section derives an azimuth angle of the first object based on the difference of the first phase and an azimuth angle of the second object based on the difference of the second phase in a pair of the antennas. | 04-14-2011 |
20110095940 | Asset Monitoring Using Micropower Impulse Radar - Arrangement and method for monitoring inanimate objects in an interior thereof includes a sensor system arranged to obtain data about the object by applying micropower impulse radar (MIR) transmissions into the interior of the asset, i.e., container volume monitoring using MIR, a location determining system arranged on the asset to monitor the location of the asset, and a communication system arranged on the asset and coupled to the sensor system and the location determining system. The communication system transmits the data about each object obtained by the sensor system and the location of the asset provided by the location determining system to one or more remote facilities, these remote facilities being those interested in the information about the objects in the asset being monitored. | 04-28-2011 |
20110109497 | ANTENNA DEVICE AND RADAR APPARATUS - This disclosure provides an antenna device, which includes a waveguide having a rectangular cross-section and formed with a plurality of slots in at least one side face thereof. The plurality of slots are arranged in a tube axis direction. At least one of the plurality of slots is formed with a predetermined inclination angle from a plane perpendicular to a tube axis direction of the waveguide. | 05-12-2011 |
20110109498 | METHODS AND SYSTEMS FOR ENCODED BROADCASTING AND ANTENNA RECEPTION, PARTICULARLY FOR RADAR - To reduce radar cells and to improve the detection of a radar system, particularly a high-frequency surface wave radar (HFSWR), the broadcast system (SEM) is capable of broadcasting basic orthogonal signals two by two and each orthogonal to itself, temporally shifted to form, respectively, broadcast radiation patterns, each including main radiation lobes (L | 05-12-2011 |
20110128182 | APPARATUS FOR POSITION NOTIFICATION OF VEHICLE, METHOD AND COMPUTER-READABLE MEDIUM - A vehicle position notification apparatus include a main body unit which includes at least a detection unit, an attachment unit and a communication unit; wherein the detection unit detects a body under detection; the attachment unit makes the main body unit adhere to the body under detection detected; and the communication unit transmits position information of the main body unit. | 06-02-2011 |
20110133981 | SYSTEM AND METHOD FOR THE THREE DIMENSIONAL LOCATING OF AN OBJECT IN A VOLUME - The invention relates to a system for locating an object in a volume comprising:—a first matrix of scanning antennas positioned in a first plane;—first detection means arranged so as to detect a first signal received by the object in response to a first electromagnetic signal emitted by the first matrix towards the volume;—first means of two-dimensional locating that are arranged so as to determine the position of a projection of the object into the first plane as a function of the first signal received; in which the system comprises:—a second matrix of scanning antennas which is positioned in a second plane, the second plane not being parallel to the first plane, second detection means arranged so as to detect a second signal received by the object in the volume in response to a second electromagnetic signal emitted by the second matrix of antennas towards the volume;—second means of two-dimensional locating which are arranged so as to determine the position of a projection of the object in the second plane as a function of the second signal received;—means of three-dimensional locating arranged to locate the object in a reference frame formed by the first plane and the second plane, as a function of the position of the object in the first plane and in the second plane. | 06-09-2011 |
20110140952 | AIRBORNE RADAR HAVING A WIDE ANGULAR COVERAGE, NOTABLY FOR THE SENSE-AND-AVOID FUNCTION - An airborne radar device having a given angular coverage in elevation and in azimuth includes a transmit system, a receive system and processing means for carrying out target detection and location measurements. The transmit system includes: a transmit antenna made up of at least a first linear array of radiating elements focusing a transmit beam, said arrays being approximately parallel to one another; at least one waveform generator; means for amplifying the transmit signals produced by the waveform generator or generators; and means for controlling the transmit signals produced by the waveform generator or generators, said control means feeding each radiating element with a transmit signal. The radiating elements being controlled for simultaneously carrying out electronic scanning of the transmit beam in elevation and for coloured transmission in elevation. | 06-16-2011 |
20110181459 | SYSTEMS AND METHODS FOR INCIDENT ANGLE MEASUREMENT OF WAVES IMPINGING ON A RECEIVER - Embodiments relate to radar systems and methods. In an embodiment, a system includes a radio frequency (RF) sensor array comprising a plurality of spaced apart sensors; and a reflector element positioned proximate the RF sensor array to reflect waves toward the RF sensor array. In an embodiment, a system includes an antenna array comprising a transceive antenna and a plurality of receive antennas; a mirror arranged proximate the antenna array; a voltage controlled oscillator (VCO) configured to generate a signal to be transmitted by the transceive antenna; and a controller configured to resolve signals received by the plurality of receive antennas to determine an angular position of a target, wherein the signals received include a first portion of the signal reflected by the target and a second portion of the signal reflected by the target and the mirror. | 07-28-2011 |
20110193739 | Orthogonal Frequency Division Multiplexing (OFDM) Radio as Radar - An orthogonal frequency division multiplexing (OFDM) communication system is adapted for radar ranging and imaging. A radar system includes an orthogonal frequency division multiplexing (OFDM) radio communications transmitter configured to transmit information bits using one or more payload symbols in a transmitted signal; and a receiver configured to: construct the payload symbols from the information bits provided by the transmitter; receive the payload symbols in the transmitted signal reflected from a target; apply a matched filter to the received payload symbols using the constructed payload symbols as a template; and process a magnitude response at an output of the matched filter for estimating location and imaging of the target. | 08-11-2011 |
20110273325 | RADAR SYSTEM AND ANTENNA WITH DELAY LINES AND METHOD THEREOF - A radar system, apparatus, and method includes at least one radar transmitter for transmitting an electromagnetic waveform; a receiving antenna comprising a plurality of receiving antenna elements and delay lines, each of the plurality of receiving antenna elements receiving the return signal operatively associated with a predetermined delay line; each delay line having a delay length which produces a different phase delay in the return signal; the different phase delays producing substantially different antenna patterns for the received signal at a given frequency; at least one processor operatively connected to receive data from the plurality of delay lines; the at least one processor operating to analyze the substantially different beam patterns for a given frequency; whereby the processing of the data produces results indicating the presence and location of a target. | 11-10-2011 |
20110298651 | METHOD AND DEVICE FOR PROCESSING SIGNAL, RADAR APPARATUS, AND PROGRAM FOR PROCESSING SIGNAL - This disclosure provides a signal processing device, which includes an echo signal input module for being inputted with echo signals caused by electromagnetic waves emitted from an antenna being reflected on one of more target objects, an echo signal level detecting module for detecting a level of each of the echo signals in association with a distance and an azimuth direction from the antenna, a level change detecting module for detecting a level change between the echo signals from locations which are close to each other where the distances from the antenna are substantially the same but the azimuth directions from the antenna are different, a pattern output module for comparing the level change with a pattern determined in advance to output a level change pattern, and an interference determining module for determining interference based on at least two of the level change patterns. | 12-08-2011 |
20110298652 | SUBMILLIMETER RADAR USING SIGNALS REFLECTED FROM MULTIPLE ANGLES - A submillimeter wavelength radar system has a receiver ( | 12-08-2011 |
20110309970 | SYSTEM FOR DETECTING A POSITION OF AN OBJECT IN A PLANE - The system for detecting a position of an object in a plane ( | 12-22-2011 |
20120001793 | Radar registration using targets of opportunity - A method for registering a radar system. The method includes obtaining first values for a location of a target relative to the radar system using radar system initiated signals, obtaining geo-referenced location data for and from the target, obtaining second values for the location of the target relative to the radar system using the geo-referenced location data, computing location registration bias errors for the radar system using the first and second values, and registering the radar system using the computed location registration bias errors. | 01-05-2012 |
20120056776 | ANTENNA DEVICE AND RADAR DEVICE - According to one embodiment, an antenna device is provided with a dielectric substrate whose both surfaces are covered by first and second metal films, a via-hole row in which via-holes are arranged in two rows on the dielectric substrate, and a waveguide line is formed by the first and the second metal films, and a slot pair provided in the first metal film. The slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line. A center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction. | 03-08-2012 |
20120086593 | SENSOR, ADJUSTING METHOD, AND MEASURING METHOD FOR A SENSOR - A sensor including a sensor housing, the sensor housing having at least three reference measuring fields for forming a reference plane. An adjusting method and a measuring method. | 04-12-2012 |
20120112953 | INTEGRATED AND CONFIGURABLE RADAR SYSTEM - An integrated radar system includes a processing module and a radar device. The radar device includes an antenna module, a configurable shaping module, and a configurable transceiver module. The processing module generates an outbound signal and a control signal to configure the integrated radar system. The configured transceiver module converts the outbound signal into an outbound wireless signal. The configured shaping module shapes the outbound wireless signal into a shaped signal. The antenna module transmits the shaped signal and then receives an inbound radar signal. The configured shaping module shapes the inbound radar signal into an inbound wireless signal. The configured transceiver module converts the inbound wireless signal into an inbound symbol stream. The processing module determines location information regarding an object based on the inbound symbol stream. | 05-10-2012 |
20120127022 | DETECTION DEVICE, RADAR APPARATUS, DETECTION METHOD AND DETECTION PROGRAM - This disclosure provides a detection device, which includes an image data generation module for generating image data based on echo signals, and a target object detection module for determining an existence of a target object based on a level of the echo signal at each location of the image data for every azimuth. The target object detection module determines a continuity of the echo signals in a distance direction and an azimuth direction for every target object, and outputs an end location for each target object based on a determination result at each location, including a plurality of locations adjacent to a location determined as being a non-target object location. | 05-24-2012 |
20120127023 | METHOD AND DEVICE FOR PROCESSING SIGNAL, AND RADAR DEVICE - This disclosure provides a signal processing device, which includes an echo signal input unit for being inputted with echo signals caused by electromagnetic waves discharged from an antenna and reflected on one or more target objects, an echo signal level detector for detecting a level of each of the echo signals with reference to an azimuth and a distance to the antenna, a level change detector for detecting a level change between the echo signals from locations close to each other, the locations of the echo signals being such that the distances from the antenna are substantially the same but the azimuths are different, a pattern output module for comparing the level change with a predetermined reference pattern and outputting a level change pattern, and a missing determining module for determining a missing of a signal based on at least two of the level change patterns. | 05-24-2012 |
20120127024 | RADAR APPARATUS AND METHOD OF DETECTING TARGET OBJECT - This disclosure provides a radar apparatus, which includes an antenna for discharging a transmission beam with frequencies corresponding to elevation/depression angles with respect to a particular surface and receiving a reflection echo from a reflective body and a reception module for detecting an elevation/depression angle of the reflective body based on a frequency component of a reception signal received by the antenna and detecting a distance of the reflective body based on a time component of the reception signal. | 05-24-2012 |
20120146839 | OBJECT DETECTION METHOD - A dummy target is set in a direction which is the same direction as that of a detected target and at the position whose distance is double that of the detected target; a second-order wave target detection area is set in the predetermined area including the position of the dummy target; the target detected in the second-order wave target detection area is judged as being a second-order wave target; a interpolated target is set in the direction which is the same as that of the second-order wave target, and at the position whose distance is half that of the second-order wave target; a fundamental wave target detection region is set in the predetermined area including the position of the interpolated target; and the interpolated target is outputted as a fundamental wave target in the case where no fundamental wave target is detected in the fundamental wave target detection region. Even if the fundamental wave target to be detected is undetected within a close range, data on the fundamental wave target is estimated and outputted on the basis of the interpolated target calculated from the second-order wave target which continues being detected, as described above. This makes it possible to continue detecting the fundamental wave target without interruption. Accordingly, it is possible to provide an object detection method which enables an object in a close range to be detected securely by a radar device. | 06-14-2012 |
20120169530 | PORTABLE HOUSINGS FOR GENERATION OF BUILDING MAPS - A system and method are presented for producing a model of the interior of a building. The model is capable of receiving and dynamically incorporating input from various sources including, for example, existing static map data, data such as annotations and updates provided by persons on the scene but outside the building, and real-time data from sensors located on mobile persons or assets that are dynamically moving inside the building. In some cases, the moving persons or assets inside the building may carry a unit that emits sound or electromagnetic pulses, which reflect off the immediate surroundings in a particular room or portion of the building, and sense the reflected pulses. The reflections from relatively close features may arrive at the sensor more quickly than those from relatively distant features, so that temporal analysis of the reflected pulse may provide information about features in the building as a function of their distance away from the unit. Pulses may be emitted and received at multiple locations in a room or portion of the building. The reflected pulses may be analyzed, using specific time shifts that correspond to round-trip travel times in particular directions, so that the actual locations of features may be identified. By walking from room-to-room throughout the interior of a building and performing such analysis, much or all of the interior of a building may be mapped. | 07-05-2012 |
20120223855 | RADAR APPARATUS - There is provided a radar apparatus of an electronic scan type configured to transmit an electric wave and calculate an angle of a target based on a phase difference of respective reception signals, thereby detecting a target position. An antenna unit transmits and receives the electric wave and provided with two transmission antennae. A transmission unit alternately transmits an electric wave having a first beam pattern and an electric wave having a second beam pattern from the two transmission antennae. First and second reception units calculate arrival angles and reception levels of reflected waves calculated from respective reception signals which are obtained by receiving the reflected waves by the first and second beam patterns. A comparison unit compares the reception levels by combining the arrival angles of the reflected waves. A determination unit determines whether a target actually exists at the arrival angles in accordance a comparison result. | 09-06-2012 |
20120223856 | Electromagnetic Emitter Emitting Simultaneously Along Three Orthogonal Axes to Detect Object Position and Orientation - An electromagnetic emission device for helmet position detection systems includes an electromagnetic emitter and control electronics, the emitter comprising three windings arranged perpendicularly, the processing electronics comprising three electronic chains each associated to a given winding and working simultaneously. Each electronic chain comprises closed-loop control means arranged such that the related signal generated comprises three analogue components: a first component, being the stimulus component, modulated at an “emission” frequency of the winding, each of the three emission frequencies being different from one winding to the next, and a second and a third component, referred to as correction components, modulated at an emission frequency of another winding, the phase and amplitude of which are calculated such as to compensate the parasitic signals received by said winding from the other two windings. Each winding in steady-state only emits electromagnetic radiation at its own emission frequency and at a predetermined phase and intensity. | 09-06-2012 |
20120229327 | RADAR SIGNAL PROCESSING DEVICE AND PROGRAM, AND RADAR APPARATUS - This disclosure provides a radar signal processing device, which includes an amplitude value change determiner for determining, among amplitude values of a series of reception data, an increase/decrease tendency of a predetermined number of amplitude values of the reception data, and a filter processor for filtering the reception data based on the determination result. | 09-13-2012 |
20120242533 | OBJECT DETECTION AND TRACKING SUPPORT SYSTEM, CONTROL METHOD, AND PROGRAM - An object detection and tracking support system includes a setting unit, a transmission level obtaining unit, a propagation loss function estimating unit that, based on various information relating to a transmitter and a receiver stored in the setting unit, calculates the propagation loss as a propagation loss function expressed as a function of the distance and the direction viewed from the receiver, a target strength obtaining unit that, in regard to an object of object information stored in the setting unit, extracts a target strength of the object from an external database; and a detection signal level function estimating unit that, based on transmission level information obtained by the transmission level obtaining unit, a propagation loss function calculated by the propagation loss coefficient estimating unit, and a target strength extracted by the target strength obtaining unit, determines a detection signal level function, for display on an external display unit. | 09-27-2012 |
20120256783 | RADAR DETECTION AND LOCATION OF RADIO FREQUENCY (RF) DEVICES - A system and method for detecting the presence of an RF device and determining a location of the RF device. The system includes a first antenna capable of transmitting a first radar signal and receiving RF signals, a second antenna capable of transmitting a second radar signal and receiving RF signals, where the second radar signal is offset in frequency from the first radar signal, and one or more processors. The one or more processors analyzes harmonic and intermodulation (IM) signals generated in response to the first radar signal and the second radar signal interacting with nonlinear characteristics in components of a RF device. The analyzing provides detection of the presence of the RF device and the determination of a location of the RF device regardless of whether the RF device is active or passive. | 10-11-2012 |
20120262333 | BEAM POSITION MONITOR FOR ELECTRON LINEAR ACCELERATOR - Electron linear accelerators are used to generate X-ray radiation for the treatment of tumors. Efficient irradiation of tumors can only be guaranteed if the electron beam is guided accurately and so the required dose profile is applied. The deviation from the ideal path of the electron beam is measured by means of so-called beam position monitors and then corrected by magnets. | 10-18-2012 |
20120293360 | RADAR DEVICE, CALIBRATION SYSTEM AND CALIBRATION METHOD - In an environment inspection mode of a calibration system, a radar device executes a signal analysis process to calculate an eigenvalue ratio of each comparison eigenvalue. The eigenvalue ratio has a small value when a pair of eigenvalues corresponding to arrival radar waves has a strong correlation. On the other hand, the eigenvalue ratio has a large value when the eigenvalue ratio is calculated between an eigenvalue and thermal noise. When there is no eigenvalue which is not more than a reference threshold value, the radar device indicates a notice that the current environment is suitable for the calibration of the radar device. On the other hand, when there is presence of at least one eigenvalue of not more than the reference threshold value, the radar device indicates a notice that the current environment is unsuitable for the calibration of the radar device. | 11-22-2012 |
20130002473 | Short Baseline Helicopter Positioning Radar For Low Visibility Using Combined Phased Array and Phase Difference Array Receivers - A helicopter position location system includes a receiver located substantially in a center of an array of receivers. A first array of receivers is located in a selected pattern separated from the center receiver by a first distance. Selected receivers in the first array are spaced apart from each other by at most one half wavelength of a base frequency of a locator signal transmitted from a helicopter. A second array of receivers is located in a selected pattern by a second distance larger than the first distance. A transmitter on the transmits a signal having a base frequency and a plurality of hop frequencies A processor in signal communication with the receivers is configured to determine phase difference with respect to frequency between any pair of receivers, to determine time delay of arrival based on the phase difference with respect to frequency, to beam steer response of the selected receivers, and to use the beam steered response and time delay of arrival between pairs of receivers to determine a position of the helicopter. | 01-03-2013 |
20130009804 | FAST RAY TRACE TO IDENTIFY RADAR MULTIPATHS - A method of detecting a target in a room using a radar system having a transmitter for irradiating the object, a sensor for receiving reflected radiation, and circuitry for analyzing the reflected radiation to determine at least one characteristic thereof, the method including determining at least one parameter for each wall of a plurality of walls of a room containing the target; determining possible signal paths between the target and the sensor for paths including up to N reflections based on the at least one parameter of each wall and the location of the sensor; calculating target image locations based on the possible signal paths; and processing the received radiation to determine a target location based on target image locations. | 01-10-2013 |
20130069818 | SYSTEM AND METHOD FOR DETECTION AND RANGING - A detection and ranging system includes: a signal generator configured to generate M probe signals having different carrier frequencies; M transmitting elements configured to transmit the M probe signals; N receiving elements configured to receive an echo signal from a target; N demodulators provided for the N receiving elements, each of the demodulators being configured to generate a demodulated echo signal by demodulating an echo signal received by a corresponding one of the receiving elements by using at least one of the M probe signals, and to generate M sets of data signals corresponding to the M probe signals by filtering the modulated echo signal in a frequency domain; and a signal processor configured to detect the target according to M×N sets of data signals generated by the N demodulators. | 03-21-2013 |
20130093617 | METHODS FOR RESOLVING RADAR AMBIGUITIES USING MULTIPLE HYPOTHESIS TRACKING - Methods for resolving radar ambiguities using multiple hypothesis tracking are described. One such method includes (a) choosing a single waveform for each of a plurality of dwells of a first scan, wherein the single waveforms of consecutive scans are different, (b) generating the first scan using the single waveform for each of the dwells of the first scan, (c) receiving observation data as a result of the first scan, the observation data comprising measured positions of true targets and false targets, (d) generating, using multiple hypothesis tracking, position predictions for true targets and false targets, (e) comparing the predicted positions and measured positions, repeating (a)-(e) until a preselected process condition is met, and determining the true targets based on the results of the comparisons. | 04-18-2013 |
20130113651 | DUAL MONOPULSE/INTERFEROMETER RADAR AESA APERTURE - A dual monopulse/interferometer antenna and radar system. In one example, the antenna includes an active electronically steered monopulse array, and is configurable into an interferometer mode which uses a subset of the array elements of each quadrant of the monopulse array. In one example, the RF feed network that combines signals received from each element in the array to produce monopulse return signals is modified in the interferometer mode to couple out the subset of array elements to produce return signals that are analyzed using interferometric processing. | 05-09-2013 |
20130120184 | RADAR APPARATUS - A radar apparatus is disclosed which includes: a distance detecting part configured to detect, among plural bins, an existence distance bin in which the target object exists, a direction detecting process executing part configured to execute a process of detecting a direction in which the target object exists, with respect to a distance bin other than the existence distance bin detected by the distance detecting part, among plural bins from which relative distances to the target object can be calculated, if a predetermined criterion is met; an existence area detecting part configured to detect, based on an execution result of the direction detecting process executing part, an area in which the target object exists. | 05-16-2013 |
20130120185 | RADAR APPARATUS - A radar apparatus transmits a radio frequency transmission signal from a transmitter antenna in a given transmission period, and receives a signal of a reflected wave reflected by a target via a receiver antenna. The radar apparatus includes a transmission signal generator that generates a first transmission signal obtained by modifying a code having a third sub-code sequence and a fourth sub-code sequence coupled to each other in a first transmission period, and generates a second transmission period obtained by modifying a code having a fifth sub-code sequence and a sixth sub-code sequence coupled to each other in a second transmission period, and a transmitter RF unit that converts the first and second transmission signals into radio frequency transmission signals, and transmits the radio frequency transmission signals from the transmitter antenna. | 05-16-2013 |
20130147656 | DETECTION AND RANGING SYSTEM AND ANGLE ESTIMATION METHOD - A detection and ranging system includes: M transmitting sensor elements configured to transmit a probe signal; N receiving sensor elements configured to receive an echo signal generated upon reflection of the probe signal from a target; a matrix generator configured to generate a third matrix by multiplying a first matrix by a second matrix, the first matrix including as diagonal components L received signals obtained from an effective receiving sensor array formed by synthesizing the M transmitting sensor elements and the N receiving sensor elements, the second matrix being formed of P L-dimensional vectors that are linearly independent of each other; and an estimator configured to estimate a direction of arrival of the echo signal from the target according to a pseudo covariance matrix generated by multiplying the third matrix by Hermitian conjugate transposition of the third matrix. | 06-13-2013 |
20130162463 | SPACE PERCEPTION DEVICE - Disclosed is a space perception device which includes a transceiver unit transmitting and receiving a signal; a processing unit analyzing signals transmitted and received through the transceiver unit to search location information of an obstacle at a space; and a vibration unit providing a user with location information of an obstacle at a space in response to a control of the processing unit. The vibration unit includes a plurality of vibrators having different three-dimensional coordinates. | 06-27-2013 |
20130229299 | ANTENNA COVER - An antenna cover ( | 09-05-2013 |
20130249731 | RADAR APPARATUS AND TARGET DETECTING METHOD - A radar apparatus includes a retrieval unit, an estimation unit, a calculation unit, and a determination unit. The retrieval unit retrieves a strong reflection object based on a signal strength which a frequency spectrum of a beat signal generated by mixing a transmission signal which is frequency-modulated and emitted and a reception signal which is formed in the transmission signal is reflected on a target indicates. The estimation unit estimates an estimation orientation which is an orientation of a target assumed to be present around the strong reflection object, based on a relative distance to the strong reflection object. The calculation unit calculates power which is the signal strength for the estimation orientation by generating an orientation spectrum in the estimation orientation based on a frequency component corresponding to the relative distance. The determination unit determines whether there is the target in the estimation orientation based on the power. | 09-26-2013 |
20130271311 | RECEIVING AND PROCESSING DEVICE, RECEIVING AND PROCESSING METHOD, AND RECEIVING AND PROCESSING PROGRAM - A receiving and processing device includes an antenna extension unit configured to perform a process of additionally arranging data pieces of two or more continuous receiving antennas in a receiving antenna array in which the plurality of receiving antennas are arranged at regular intervals, a process of inverting phases of data pieces of the additionally-arranged two or more receiving antennas, a process of rearranging the data pieces of the phase-inverted two or more receiving antennas so as to invert the arrangement of the data pieces, a process of rotating the phases of the data pieces of the rearranged two or more receiving antennas, and a process of connecting the data pieces of the phase-rotated two or more receiving antennas to the data pieces of the plurality of receiving antennas. | 10-17-2013 |
20130278456 | RECEIVING AND PROCESSING DEVICE, RECEIVING AND PROCESSING METHOD, AND RECEIVING AND PROCESSING PROGRAM - A receiving and processing device includes an antenna extension unit configured to perform a process of arranging data of two or more continuous receiving antennas in which one or more intervals from one end are different from a regular interval at the other positions in a receiving antenna array in which a plurality of receiving antennas are arranged at two or more irregular intervals, a process of inverting phases of the arranged data of the two or more receiving antennas, a process of rearranging the phase-inverted data of the two or more receiving antennas so as to invert the arrangement of the data, a process of rotating the phases of the rearranged data of the two or more receiving antennas, and a process of connecting the phase-rotated data of the two or more receiving antennas to the data of the original two or more receiving antennas. | 10-24-2013 |
20130278457 | DIRECTION DETECTION APPARATUS, DIRECTION DETECTION METHOD, AND DIRECTION DETECTION PROGRAM - A direction detection apparatus includes antennas of a plurality of systems having polarization characteristics different from each other and configured to receive a signal reflected by an object, a determination unit configured to determine the polarization characteristic of the received signal, and an operation processing unit configured to select a detection range corresponding to the polarization characteristic which have been determined. | 10-24-2013 |
20130293408 | RADAR IMAGE PROCESSING - Apparatus and a method for processing a radar image, the method comprising: using a radar, generating a radar image of an area of terrain ( | 11-07-2013 |
20130300596 | DETECTION AND RANGING APPARATUS AND RANGING METHOD - An apparatus includes a first array including sensors; a second array including sensors that are not collinear with the sensors of the first array except for a sensor that defines the origin of a spatial phase; and a signal processing unit that generates covariance matrices including a first covariance matrix and a second covariance matrix based on reflected waves received by the first and second arrays from targets, estimates first angles of the targets based on the first covariance matrix, reproduces an angle matrix based on the estimated first angles, performs triangular decomposition on the product of a generalized inverse matrix of the angle matrix and the second covariance matrix to obtain a matrix, constructs a similarity transformation problem from submatrices of the obtained matrix, and estimates second angles of the targets based on the estimated first angles and solutions of the similarity transformation problem. | 11-14-2013 |
20130300597 | TARGET FINDER, HIGH RESOLUTION PROCESSING DEVICE, AND HIGH RESOLUTION PROCESSING METHOD - A high resolution processing device that is provided to a target finder for detecting a presence of a target, and that increases resolution of a received signal received by the target finder, includes a first change amount calculator, a second change amount calculator, a coefficient setting component, and an output signal production component. The first change amount calculator calculates as a first change amount an amount of change in the received signal received by the target finder per unit quantity in one direction of an angle direction and a distance direction. The second change amount calculator calculates as a second change amount an amount of change in the first change amount per unit quantity in the one direction. The coefficient setting component sets at least one coefficient based on the first change amount and the second change amount. | 11-14-2013 |
20130300598 | APPARATUS FOR MEASURING WIDTH DIRECTION END POSITION OF STRIP, APPARATUS FOR MEASURING WIDTH DIRECTION CENTRAL POSITION OF STRIP AND MICROWAVE SCATTERING PLATE - The apparatus according to the present invention is an apparatus for measuring width direction end position of a strip which passes through an enclosed space surrounded by a plurality of surfaces. The apparatus includes an antenna section which emits electromagnetic waves toward the width direction end and receives the electromagnetic waves reflected by the width direction end; a signal processing section for determining a position of the width direction end using the reflected electromagnetic waves; and a scattering plate for scattering electromagnetic waves which are incident thereon, wherein the antenna section is installed on a first surface which faces the width direction end a position of which is to be determined and the scattering plate is installed on a second surface which faces the first surface. | 11-14-2013 |
20140035777 | METHOD AND SYSTEM FOR PRODUCING CLASSIFIER FOR RECOGNIZING OBSTACLE - The present invention provides a method and a system for producing a classifier for recognizing an obstacle, including a processor configured to: display surface data of a plurality of obstacles measured by a distance measurement sensor in a two-dimensional (2D) coordinate system; group and classify the surface data displayed in the 2D coordinate system for each obstacle; setting a plurality of feature references to analyze region based features displayed for each obstacle in the 2D coordinate system and calculate the respective feature references for each obstacle grouping; and producing the classifier by applying a weight to each of the feature references. | 02-06-2014 |
20140043185 | METHOD FOR DETECTING, OVER SEVERAL ANTENNA REVOLUTIONS, SLOW-MOVING TARGETS BURIED IN THE RADAR CLUTTER, USING A MOBILE RADAR HAVING A ROTARY ANTENNA - A method for detecting targets using a mobile radar having a rotary antenna, notably small targets buried in radar clutter, without increasing the number of false detections, includes determining pre-detections during N antenna revolutions, including determining pre-detections revolution by revolution, each pre-detection being stored in a grid of cells centered on the position that the radar occupied at the start of the current revolution, each grid cell corresponding to an azimuth range and a distance range. This step also includes, at the end of each revolution, a step of shifting all the pre-detections stored in the grid during the previous revolutions by the movement undergone by the radar during the last revolution. The method also includes determining detections, a target being detected from the moment that a set of pre-detections stored in the grid has its distances to the radar which constitute a linear progression during the N antenna revolutions. | 02-13-2014 |
20140049421 | BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER - A bend sensor for use in wirelessly sensing an amount of bend of a joint or other monitored object. The sensor includes a radio frequency (RF) antenna and an integrated circuit linked to the antenna. The integrated circuit or chip is passive and responds to, or is powered by, a read signal received by the antenna to transmit a reflected signal via the antenna such as to an RFID reader. The sensor also includes a transducer linked to the integrated circuit. The transducer defines reflecting impedance, which modulates amplitude and phase of the reflected signal. The transducer has impedance varying with deformation or bend. In one example, the transducer includes an upper conductor, and the amount of the deformation is defined by a bend radius of the upper conductor. The read signal may be at 5 GHz or higher such with the antenna and the transducer being microwave structures. | 02-20-2014 |
20140049422 | WIRELESS POWER SYSTEM WITH CAPACITIVE PROXIMITY SENSING - This disclosure provides systems, methods and apparatus for tuning a transmit coil for operation in a plurality of frequency bands. In one aspect, a method of wireless power transmission is provided. The method includes exciting a first part of a wireless power transmission system, via a wireless power transmitter. The method further includes detecting, in the presence of a non-charging object, a first change in a first parameter. The first parameter is indicative of a coupling between the non-charging object and the first part. The method further includes varying a characteristic of the wireless power transmission based on said first change. | 02-20-2014 |
20140062762 | RADAR DEVICE AND TARGET HEIGHT CALCULATION METHOD - In an in-vehicle radar device, as a vertical azimuth which is an azimuth of a target in a direction perpendicular to a ground surface, a real image vertical azimuth which is an azimuth of a real image existing above ground is calculated from a reflected wave generated when a transmission signal transmitted from a transmission antenna reflected from the target, and a virtual image vertical azimuth which is an azimuth of a virtual image existing underground is calculated from a reflected wave generated when the transmission signal transmitted from the transmission antenna is reflected from the target and reflected again from the ground surface. Next, in the in-vehicle radar device, an angle difference between the real image vertical azimuth and the virtual image vertical azimuth which are calculated is calculated, and a height of the target from the ground surface is calculated using the calculated angle difference. | 03-06-2014 |
20140111372 | SENSOR SYSTEM AND METHOD FOR DETERMINING TARGET LOCATION USING SPARSITY-BASED PROCESSING - A system and method for an arrayed sensor to resolve ambiguity in received signals, improve direction of arrival accuracy and estimate a location of one or more targets in an environment including signal interference. | 04-24-2014 |
20140132441 | OBJECT DETECTION APPARATUS AND METHOD - An object detection method includes outputting a radio wave, receiving a reflected wave of the radio wave, generating a plurality of object information each indicating a location of each of a plurality of objects with respect to a predetermined reference point based on the radio wave and the reflected wave, calculating a first distance between an observation reference line which represents a shape and a location of a target area for detection preset depending on a target object for detection, and each of the plurality of objects, based on the observation reference line information stored in advance indicating a shape and a location of the observation reference line and the object information, selecting a predetermined number or less of the object information in ascending order of the first distance among the plurality of the object information as the object information to be output, and outputting the selected object information. | 05-15-2014 |
20140139369 | OBJECT DETECTION APPARATUS - An object detection apparatus mounted in a vehicle, includes a first domain definition unit, a second domain definition unit, and a determination unit. The first domain definition unit defines a first object domain including a first detection point which is indicative of a position of a first object detected by using a vehicle-mounted radar. The second domain definition unit defines a second object domain including a second detection point which is indicative of a position of a second object detected on the basis of an image captured by a vehicle-mounted monocular camera. The determination unit determines whether or not an overlapping domain of the first and second object domains is present, and when it is determined that an overlapping domain of the first and second object domains is present, then determines that the first and second objects are the same. | 05-22-2014 |
20140145873 | Electromagnetic Reflection Profiles - Methods, systems, and products determine electromagnetic reflective characteristics of ambient environments. A wireless communications device sends a cellular impulse and receives reflections of the cellular impulse. The cellular impulse and the reflections of the cellular impulse may be compared to determine the electromagnetic reflective characteristics of an ambient environment. | 05-29-2014 |
20140210660 | Object Movement and Location Detection System and Method Thereof - An object movement and location detection system and method is provided. A locating circuit is substantially secured to the object. A plurality of monitoring units is positioned remotely from the locating circuit, each in a different location. A first omnidirectional signal is intermittently communicated between the locating circuit and the plurality of monitoring units. A movement sensor is substantially secured to the object, wherein the movement sensor detects a movement of the object. A calculator is in communication with each of the plurality of monitoring units and the movement sensor, wherein the calculator determines a duration of transmission time of the first omnidirectional signal between each of the monitoring units and the locating circuit and calculates a location of the locating circuit using the determined duration of transmission time for each of the monitoring units and the locating circuit subsequent to a detected movement of the object. | 07-31-2014 |
20140253368 | MULTI-MODE, MULTI-STATIC INTERFEROMETER UTILIZING PSEUDO ORTHOGONAL CODES - A system for providing a multi-mode, multi-static interferometer may include a transmitter array, a receiver array and a processor. The transmitter array includes at least a first transmitter and a second transmitter spatially separated from each other by a first known distance. The receiver array includes at least a first receiver and a second receiver spatially separated from each other by a second known distance. The receiver array is positioned to enable receipt of a return signal from transmissions provided by the transmitter array and reflecting off an object. The processor is configured to enable the transmitter array to generate uniquely coded signals and configured to distinguish, based on the uniquely coded signals, a first signal transmitted by the first transmitter from a second signal transmitted by the second transmitter in response to reception of a combined signal including reflected signals corresponding to at least the first and second signals by the receiver array. | 09-11-2014 |
20140292560 | PEDESTRIAN DETECTING DEVICE FOR VEHICLE, PEDESTRIAN PROTECTION SYSTEM FOR VEHICLE AND PEDESTRIAN DETERMINATION METHOD - A pedestrian detecting device mounted on a vehicle includes: a transmission unit that irradiates an electromagnetic wave to an area around a vehicle; a receiving unit that receives a reflected wave caused by reflection of the electromagnetic wave from an obstacle; a storage unit that stores data of the reflected wave received by the receiving unit; and a control unit that reads the data of the reflected wave, stored in the storage unit, and that calculates a variance of an intensity of the reflected wave, wherein the control unit determines that the obstacle is a pedestrian when the calculated variance of the intensity of the reflected wave is larger than or equal to a reference value, and, after the control unit determines that the obstacle is a pedestrian, the control unit identifies that the same obstacle is a pedestrian and outputs information regarding a position of the pedestrian. | 10-02-2014 |
20140327567 | RADAR DEVICE - Each antenna system processor performs coherent integration on a prescribed number of correlation values between a reception signal and a transmission code. A correlation matrix generator generates a correlation matrix on the basis of coherent integration values. A distance estimator estimates a distance to a target. A direction vector storage is stored with direction vectors each of which includes an azimuth component with respect to a target and an elevation angle component of a line connecting a transmission antenna and the target in which a prescribed direction is used as a reference. An incoming direction estimator estimates a signal incoming direction from the target using the correlation matrix and the direction vectors in which the elevation angle component range is restricted on the basis of the distance to the target. | 11-06-2014 |
20140327568 | METHOD FOR DETERMINING THE IMPACT POINT OF A PROJECTILE FIRED AT A TARGET ABOVE SEA SURFACE, AND RADAR SYSTEM IMPLEMENTING SUCH METHOD - There is disclosed a method for determining the impact point of a projectile fired at a target ( | 11-06-2014 |
20140347209 | SYSTEM AND METHOD FOR DETERMINING A POSITION OF A LIVING BEING IN A VEHICLE - A system for determining a position of a living being in a vehicle interior includes at least three components, each component of a first type or a second type, one of the first or second type being a transmitter and the other a receiver. Two components are of the first type and one component is of the second type. Each component is adapted to transmit or receive a signal dependent on type. The signal is adapted for determining a presence of the living being and for determining a distance (d | 11-27-2014 |
20140347210 | Hand Tool Device having at least One Locating Device - A hand tool device comprises a computation unit and at least one locating device that is configured to receive a locating signal having a circularly polarized component. The computation unit is configured to ascertain a piece of position information of a locatable object from the circularly polarized part of the locating signal. | 11-27-2014 |
20150022392 | Method for Representing a Vehicle Environment with Position Points - The invention relates to a method for representing a vehicle environment for a vehicle with a sensor system in order to detect the environment. For this purpose, the vehicle environment is described with a predetermined fixed set of position points (particles). | 01-22-2015 |
20150077286 | ELEVATION MONOPULSE ANTENNA SYNTHESIS FOR AZIMUTH CONNECTED PHASE ARRAY ANTENNAS AND METHOD - Embodiments of the present invention are directed to monopulse radar antenna synthesis and methods thereof. An antenna array includes a number of sub-arrays operatively arranged in a first direction (e.g., azimuth), and each of the sub-arrays includes a number of antenna elements grouped as a first group and a second group adjacent to each other in a second direction substantially perpendicular to the first direction. The antenna array can perform monopulse processing in the elevation direction by synthesizing two monopulse antennas by to form monopulse antennas with phase centers that differ in elevation. | 03-19-2015 |
20150097716 | PASSIVE RADIO FREQUENCY IDENTIFICATION RANGING - Systems, methods, apparatuses, and computer readable media are disclosed for providing timing-based distance measurement to a passive radio frequency identification (“RFID”) tag using one or more wideband RF signals synchronized with the standard narrowband RF signal. In some embodiments, the narrowband RF signal activates a passive RFID tag creating a backscatter reflection target which returns a modulated narrowband signal and a wideband signal from the passive RFID tag. The one or more wideband receivers determine time-of-flight and/or time-of-arrival measurements for the returned wideband signal. A location measurement is then calculated for the passive RFID tag using the tag data, the known location of the wideband transceivers, and the time-of-flight/time-of-arrival data. | 04-09-2015 |
20150102957 | RANGING METHOD, RANGING DEVICE, LOCATION DEVICE AND LOCATION METHOD - A ranging method, executed in a ranging device, comprising steps of: obtaining a trip time of a received wireless signal, wherein the received wireless signal is a wireless signal from an object; calculating a statistical value of a rising time of the received wireless signal; correcting the trip time according to the statistical value of the rising time; and estimating a distance between the object and the ranging device according to the corrected trip time. | 04-16-2015 |
20150123839 | DEVICE FOR DETECTING AND LOCATING MOBILE BODIES PROVIDED WITH RADARS, AND RELATED METHOD - A device for detecting and locating moving objects that are equipped with at least one radar comprises a radar function comprising an antenna disposed on a revolving structure and a radar emissions detector function comprising an antennal part, and is characterized in that the antennal part of the radar emissions detector function is placed on said revolving structure. | 05-07-2015 |
20150145716 | RADAR USING HERMETIC TRANSFORMS - The systems and methods use Hermetic Transform processing to achieve higher resolution in space, time, and frequency measurements, leading to enhanced object detection, localization, and classification, and can improve several aspects of RADAR, including: phased-array beamforming, Doppler filter processing, pulse compression/replica correlation, and in the creation of higher resolution ambiguity function measurements for both multi-static active and passive RADAR. | 05-28-2015 |
20150301168 | Omnidirectional Retrodirective Antennas - Embodiments of the invention are directed to retrodirective radio-frequency systems wherein a transmit antenna array includes at least one row of N transmit elements and a receive antenna array includes at least one row of N receive elements that correspond one-to-one to the transmit elements and wherein the transmit and receive elements are located on spaced planes, and centered about a common axis and located at common transmit distance and a common receive distance, respectively. In some embodiments the one row of transmit and receive elements comprises “n” rows of elements, where “n” is an integer greater than one, thereby forming a two-dimensional array. In some embodiments the total transmit radiation pattern provides an azimuth coverage of 360 degrees. In other embodiments, it may provide less coverage but be operable as independent sectors. In some embodiments, the desired transmit wave form will be identical between all transmit elements of the array, one possible example being pseudo random noise imparted on a sinusoidal carrier. | 10-22-2015 |
20150301169 | A METHOD AND A DEVICE FOR DETERMINING THE TRAJECTORY OF A BULLET EMITTED BY A SHOTGUN AND FOR LOCATING A SHOT POSITION - A radar device and a method for determining, in an observation zone, the trajectory of a bullet fired by a small firearm, wherein the radar device is arranged at a radar site and performs a radar scanning step of the observation zone. The radar-scanning step comprises emitting a periodic radar signal of frequency set between 4 GHz and 18 GHz, in particular, a signal comprising two tones that have respective distinct frequencies, and demodulating and processing a return signal received in response to the radar signal, detecting, when a shot is fired, a trace of the bullet comprising a plurality of points or plots. | 10-22-2015 |
20150323661 | METHOD AND DEVICE FOR MONITORING AN IMMOBILE SPACE REGION - A device for monitoring an immobile space region includes: a radar transmitting device fixedly installed with respect to the immobile space region and configured for emitting radar beams; a radar receiving device fixedly installed with respect to the immobile space region and configured for receiving the emitted radar beams reflected at an object in the immobile space region; an evaluation device for evaluating the received radar beams using a predetermined evaluation model for determining a position and/or a trajectory of the object in the immobile space region; a control unit for generating a control signal based on a predetermined decision model as well as based on the determined position and/or the determined trajectory of the object; and an actuator device controlled using the control signals generated by the control unit. | 11-12-2015 |
20150323663 | DANGER ZONE MONITORING AT A GRADE CROSSING - In a method for identifying a danger zone to be monitored at a grade crossing, the following are performed: at least one radar sensor is situated at the danger zone; object trajectories from sequences over time of object positions of respective objects moving through the danger zone are ascertained by the radar sensor; the position of at least one traffic path is identified with the aid of an accumulation of object trajectories; the positions of barrier straight lines are ascertained with the aid of radar reflections of the closed barriers; and the danger zone is determined by linking information on the identified position of the at least one traffic path with information on the ascertained position of the barrier straight lines. | 11-12-2015 |
20150355323 | Obstacle map reconstruction system and method - A method for obstacle detection, the method may include receiving or generating, by a computerized system, detection information about input radio frequency (RF) signals detected by a RF receiver as a result of a transmission of RF output signals towards a space that comprises potential obstacles; and detecting, by the computerized system, obstacles by associating agent behaviors with clusters of input RF signals. | 12-10-2015 |
20150355324 | SYSTEM AND METHOD FOR DETECTION AND ORBIT DETERMINATION OF EARTH ORBITING OBJECTS - A system for detection and orbit determination of Earth orbiting objects includes a first plurality of sensors including at least one first antenna. The at least one first antenna is configured to point in a stare mode to broadcast a first detection signal at an angular region centered on an equatorial plane to maximize detection of orbiting objects regardless of altitude, grade, or inclination. The first antenna may be configured to stare at a low inclination angle, and may be configured to stare at one of due east and due west along the equator. | 12-10-2015 |
20160003939 | VEHICLE RADAR CONTROL - Methods and systems are provided for controlling a radar system of a vehicle. One or more transmitters are configured to transmit radar signals. A plurality of receivers are configured to receive return radar signals after the transmitted radar signals are deflected from an object proximate the vehicle. A processor is coupled to the plurality of receivers, and is configured to generate a plurality of feature vectors based on the returned radar signals and generate a three dimensional representation of the object using the plurality of feature vectors. | 01-07-2016 |
20160047910 | RADAR SIGNAL PROCESSING METHOD AND APPARATUS - Provided is a radar signal processing method and apparatus, the method including transmitting a plurality of transmission radar signals through a transmission antenna, receiving a reception radar signal reflected from a target in response to the transmitting, and extracting location information on the target based on a result obtained by applying an auto-correlation to the reception radar signal. | 02-18-2016 |
20160069985 | ASSURED VEHICLE ABSOLUTE LOCALISATION - It is proposed to provide a system for localizing a vehicle in a marked environment, provided with a set of markers, e.g. on a road side, the markers emitting a position signal indicative of a respective marker's known geographical position. The system comprises a distance detection unit and a processing unit provided in the vehicle, the processing unit adapted to receive said position signal of a respective marker. The processing unit is adapted to receive said known geographical position from the position signal of said respective marker; and to estimate a first distance measure of the vehicle relative to the respective marker based on a position signal measurement. The processing unit feeds said estimated first distance measure to the distance detection unit; the distance detection unit being adapted to detect said marker within the first distance measure by a second distance measure. The distance detection unit is further adapted to provide the processing unit with the second distance measure of the vehicle relative to the detected marker and with a detection angle of the detected marker; and the localization unit calculating an instantaneous geographical position of said vehicle from the second distance measure; the detection angle and the marker's known geographical position. | 03-10-2016 |
20160139255 | METHOD AND DEVICE FOR THE LOCALIZATION OF A VEHICLE FROM A FIXED REFERENCE MAP - A method and a device for locating a vehicle from a fixed reference map in which objects are assigned one or more positions in the reference map. At successive points of a vehicle trajectory, in each case a radar impulse is emitted and subsequently, angle-resolved and time-resolved measurements of the radar impulse response are performed. Object positions are identified in the environment surrounding the vehicle from the radar impulse response, the current identified object positions forming an environment map. The vehicle position is identified in the reference map by comparing the environment map to the reference map, the reference map being created from the identified positions and is continuously updated. An object classification for the identified object positions in the current environment map and/or reference map is performed and the identification of the vehicle position is performed while taking the object classification into account. | 05-19-2016 |
20160161607 | FEATURE-BASED TRACKING OF MOVING OBJECTS - Systems and methods are provided for tracking moving objects. A sensor system is configured to measure a position of each of a plurality of moving objects as a set of measurements. A track assignment component is configured to accept the set of measurements from the sensor system and assign a subset of the measurements to respective tracks. The tracks represents the motion of respective objects. The track assignment component represents a cost calculation component configured to provide a cost matrix from at least a change point detection analysis of a feature associated with the set of measurements and an object assignment component configured to assign the subset of the measurements to respective tracks. A filtering component is configured to update respective associated states of tracks representing the plurality of moving objects according to the set of measurements and the assignment of the subset of the measurements to respective tracks. | 06-09-2016 |
20160377715 | TRACKING DEVICE WITH DEFERRED ACTIVATION AND PROPAGATION OF PASSIVE TRACKS - A tracking device estimates a track for at least one possible target and is configured to receive incoming measurements and process measurements and tracks. The device has a storage device and a computational device and an association module to calculate an association between a measurement and a track. The device further has an output module to output a sequence of track updates from an assignment module maintaining a set of active tracks using the association module as a function of active tracks and the incoming measurements to calculate associations, containing possible track updates and deciding which track updates to keep in the active tracks set and which to add to a passive tracks set. Computations on the passive tracks may be deferred until at least one passive track handling criterion is fulfilled. The computational device may activate and transfer a passive track from the passive set to the active set. | 12-29-2016 |
20190146052 | CHANNEL-BASED POSITIONING DEVICE, CHANNEL-BASED POSITIONING SYSTEM AND CHANNEL-BASED POSITIONING METHOD | 05-16-2019 |