Entries |
Document | Title | Date |
20080309557 | FACILITATING MOBILE STATION LOCATION USING A GROUND-BASED CELLULAR NETWORK - Communications facilitate locating a mobile station ( | 12-18-2008 |
20090073045 | ULTRASONIC MULTILATERATION SYSTEM FOR STRIDE VECTORING - A lateration system comprising at least one transmitter attached to a first object and configured to emit pulses, three or more receivers attached to at least one second object and configured to receive the pulses emitted by the transmitter, and a processor configured to process information received from the three or more receivers, and to generate a vector based on lateration. Lateration is one of multilateration and trilateration. The vector is used by the processor to constrain error growth in a navigation solution. | 03-19-2009 |
20090121940 | SYSTEM FOR DETERMINING POSITION OVER A NETWORK - A system to determine position, frequency and clock offsets over a network utilizing signals of opportunity transmitted by one or more transmitters with known locations, the system includes a base receiver with a clock and a known position that determines ranges to the transmitters, takes a series of samples of the signals of opportunity and time tags the series with times of receipt, calculated times of transmission based on the calculated ranges, or both. The base receiver transmits the time tagged series and, as appropriate, computed ranges to the remote receivers. A given remote receiver saves and time tags samples of the signals of opportunity, correlates the time-tagged series with the saved samples, and calculates a time offset as a time difference of the times of receipt at the remote receiver and either the time of receipt at the base receiver or the time of transmission calculated at the base receiver. The remote receiver calculates position based on the time offsets, and as appropriate, the ranges provided by the base receiver. The elevations of the remote receivers may be calculated as part of the position calculations, determined iteratively based on constraining the Z coordinate to an average elevation, or determined from differences in air pressure sensor readings at the base and remoter receivers. | 05-14-2009 |
20090128412 | METHOD AND SYSTEM FOR LOCATING SENSOR NODE IN SENSOR NETWORK USING DISTANCE DETERMINING ALGORITHM - For a sensor network having reference nodes and sensor nodes, A method and apparatus using a distance determining algorithm for a sensor network having reference nodes and sensor nodes. A distance determining algorithm is executed to determine an adequate distance between reference nodes within a preset error range, and a position location table is created. A sensor node sends a location information request to reference nodes, receives the position location table and location information from the reference nodes, and computes the coordinates of its position. Alternatively, without requesting transmission of the position location table, the sensor node may receive calculated coordinates of its position directly from a reference node. | 05-21-2009 |
20090140926 | System and method for localization utilizing dynamically deployable beacons - A beacon-based localization system utilizes a mobile object with dynamically deployable beacons for guiding the mobile object. In one form, the localization system includes a mobile object, at least two beacons and preferably a plurality of beacons, and devices for deploying and retrieving beacons. The mobile object, as well as the beacons, includes location determination units for determining location of a beacon, and communications units for communicating with the mobile object and other beacons. The mobile object deploys beacons at various known and determined locations. Initially placed beacons can provide enough location information to establish an initial work area. After work is completed in the initial area, or to cover blocked portions of the initial area, the mobile object can retrieve one or more of the beacons and place them at a new location or strategically place additional beacons from the mobile object. After each placement of an additional beacon the location is stored for later use in the localization computations. Once the work area coverage has been expanded or improved, work can continue. | 06-04-2009 |
20090231198 | ACTIVE PLAYER TRACKING - Sports objects, such as players and their equipment, are tracked by receiving signals transmitted by tags attached to the sports objects, and triangulating the signals to estimate the locations of the sports objects. One feature that promotes good signal reception is the use of different groups of three or more receivers. Another such feature is the use of two or more transmitter tags attached to different portions of the sports object. Still another such feature is the use of Ultra-Wideband signals. | 09-17-2009 |
20090237304 | METHOD FOR MAPPING MACHINE ROOMS AND LOCATING MACHINES WITHIN MACHINE ROOMS - A system and method automatically maps computer center rooms and locates data center components within computer centers. Radio triangulation is used to determine the locations and, optionally, orientation, of machines within a computer center. | 09-24-2009 |
20090237305 | Wireless location and attitude detector for a sensor - The present invention, a wireless location and attitude detector for a sensor, is intended to determine and record the position and attitude of a sensor being used to test a material. It uses radio frequency identification transponders attached to a rigid object, to which the sensor is also attached. These radio frequency identification transponders respond to radio frequency identification transceivers that measure the time of response, giving distance data for each radio frequency identification transponder. This data is calculated to establish the position and attitude of the sensor relative to the radio frequency identification transceivers. This recorded data is used by a computer to draw a contoured image of the material, as the sensor is being dragged across the material by hand. This material contour image can be combined with data from the sensor itself for the purpose of drawing an image of a tested material that shows characteristics of the material on the image. This can be done without a rigid connection of the sensor to the position recording apparatus. | 09-24-2009 |
20090256751 | Tracking Positions of Personnel, Vehicles, and Inanimate Objects - A device rotates at least one static magnetic field about an axis, producing a rotating magnetic dipole field, and is movable in relation to the surface of the ground. The field is periodically sensed using a receiver to produce a receiver output responsive to the field. A positional relationship between the receiver and the device is monitored using the output. In one aspect, changing the positional relationship, by moving the device nearer to a boring tool which supports the receiver, causes an increase in accuracy of depth determination. In another aspect, determination of an actual overhead position of the boring tool, and its application, are described. Use of a plurality of measurements over at least one-half revolution of each magnet is disclosed. Establishing a surface radial direction toward a boring tool and resolution of multi-valued parameters is described. Calibration techniques, as well as a three transmitter configuration are also described. | 10-15-2009 |
20090315778 | System and Method for Establishing a WPAN with Precise Locationing Capability - A system and method is provided for determining the location of an object. In embodiments of the disclosure, a first transceiver is associated with an object to be located. The first transceiver comprises a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol. A first signal is transmitted using the first signal transmission protocol and is received by the first receiver. The second transmitter is then used to transmit a second signal using the second transmission protocol in response to receipt of said first signal and the second signal is then to determine the location of said object. In some embodiments, the first transmission protocol is in accordance with the Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 standard and the second transmission protocol is in accordance with a Ultra-Wide Band (UWB) standard. | 12-24-2009 |
20090315779 | METHODS AND SYSTEMS FOR FAST RANGING IN WIRELESS COMMUNICATION NETWORKS - A method for efficiently performing ranging in a wireless communication network may be implemented by a mobile station. The method may include sending a ranging code to a base station. The method may also include receiving a ranging response message from the base station. The method may also include determining whether a ranging failure condition is satisfied. The ranging failure condition may relate to something other than a duration of time. The method may further include re-sending the ranging code to the base station if the ranging failure condition is satisfied. | 12-24-2009 |
20100013712 | MOBILE STATION POSITION LOCATING METHOD - A mobile station position locating method is provided for accurately locating positions of base stations without actually locating the positions of the base stations for locating the mobile station. In a transmit and receiving time detecting step (S | 01-21-2010 |
20100045530 | METHOD AND SYSTEM FOR LOCATING AN OBJECT ON A SURFACE - A method of locating an object ( | 02-25-2010 |
20100127935 | INDOOR LOCALIZATION SYSTEM AND METHOD - An indoor localization method is implemented using an indoor localization system that includes beacons deployed in an indoor space and transmitting localization signals, and a radio badge for receiving the localization signals. The indoor localization method includes forming signal vectors from the localization signals received by the radio badge at each of predetermined locations in the indoor space, and generating a signal ID value from the signal vectors for each beacon from which the radio badge has received the localization signals. During a tracking phase, signal vectors are formed from the localization signals received by the radio badge at a current location. If the number of the signal ID values is smaller than the number of the signal vectors, the sum of the signal distances is normalized by the number of the signal ID values. An estimated position of the radio badge is obtained using the signal vectors and the signal ID values. | 05-27-2010 |
20100295734 | METHOD AND APPARATUS OF USING SOFT INFORMATION FOR ENHANCING ACCURACY OF POSITION ESTIMATION FOR A WIRELESS COMMUNICATION SYSTEM - A method of enhancing accuracy of position estimation for a wireless communication system includes receiving a plurality of input measurements required for estimating a position of a target, and generating a plurality of Gaussian probability density functions corresponding to the plurality of input measurements, the plurality of Gaussian probability density functions being used for estimating the position of the target. | 11-25-2010 |
20100309059 | Method and Apparatus of Positioning for a Wireless Communication System - A method of estimating a position of a target device for a wireless communication system includes receiving a plurality of received signal strength measurements with respect to a plurality of base stations measured by the target device when the target device enters an area, and applying a graphical model to estimate the position of the target device according to the plurality of received signal strength measurements. | 12-09-2010 |
20100321246 | METHOD FOR DETECTING MOTION - The invention relates to a method for detecting motion (“Motion Capture”), wherein markers ( | 12-23-2010 |
20110090124 | METHOD AND SYSTEM FOR INDOOR POSITIONING - A method and a system for indoor positioning are provided. In the present method, a default positioning weight is defined at first. Then, a plurality of neighboring ranging devices near a target device is obtained from all wireless ranging devices deployed in an indoor space, and a current positioning weight of each of the neighboring ranging devices is calculated. Next, the current positioning weight of each of the neighboring ranging devices is respectively compared with the default positioning weight, so as to obtain a plurality of reference ranging devices from the neighboring ranging devices. After calculating at least one candidate coordinate according to a deploy coordinate of each of the reference ranging devices, a positioned coordinate represents the current location of the target device is estimated according to the at least one candidate coordinate. | 04-21-2011 |
20110102267 | METHOD AND SYSTEM FOR DETERMINING LOCATION INFORMATION - An exemplary method of determining location information includes transmitting a modeling signal from each of a plurality of detectors. Each of the plurality of detectors receives at least one of the transmitted modeling signals from the other detectors. At least one characteristic of each of the received modeling signals is determined. A signal propagation model for an area near each of the detectors is automatically determined based on the characteristic of each of the received modeling signals. The determined propagation model indicates an effect on a signal received within the corresponding area. | 05-05-2011 |
20110133990 | SYSTEM FOR DETERMINING POSITION IN A WORK SPACE - A system for determining the dimensional coordinates of a point of interest in a work space, includes a plurality of fixed-position ranging radios, located at known positions in the work space, and a wand having a first end configured for indicating a point of interest. A pair of ranging radios are mounted on the wand. A measurement circuit, responsive to the pair of ranging radios, determines the position of each of the pair of ranging radios with respect to the plurality of fixed-position ranging radios, and determines the position of the first end of the wand with respect to the plurality of fixed position ranging radios. A robotic total station may be used in lieu of the fixed-position ranging radios to monitor the positions of retroreflective elements on the wand. | 06-09-2011 |
20110163917 | METHOD AND SYSTEM FOR ANTENNA ORIENTATION COMPENSATION FOR POWER RANGING - A mobile device comprising an antenna may be operable to adjust a plurality of received signal strength indications (RSSIs) for a plurality of known RF nodes based on an orientation of the antenna and an antenna gain profile (AGP) of the antenna. The mobile device may be operable to calculate a position of the mobile device utilizing a power ranging based on the adjusted plurality of RSSIs. The mobile device may generate an antenna orientation report (AOR) utilizing a magnetometer and an accelerometer in the mobile device and determine the orientation of the antenna based on the AOR. The mobile device may be operable to determine an antenna gain value associated with each of the plurality of RSSIs for the plurality of known RF nodes based on the orientation of the antenna and the AGP of the antenna. | 07-07-2011 |
20110215969 | GPS-BASED CE DEVICE WIRELESS ACCESS POINT MAPPING - A CE device can incorporate a GPS receiver and can be moved around a building with wireless access point (AP) signal strengths recorded at various locations. The optimum AP location is selected on the basis of the location-to-signal strength correlations. | 09-08-2011 |
20110221635 | SYSTEM, METHOD AND APPARATUS FOR INTEGRATED LOCAL AREA LOCATIONING, TRACKING AND COMMUNICATIONS - The present invention is an integrated wireless system with multiple functionalities including robust (indoor/outdoor) position location, mobile receiver tracking and adaptive broadband communication. The present invention may be an adaptive position location system for local and indoor applications with improved accuracy, flexibility and security. The self-calibration technique of the present invention may cause, the position location system to be easily deployed. A master station may communicate with and control two or more slave stations and one or more user devices and thereby determine the position of a user device and track that user device, utilizing location reference sets, in accordance with the location of the master station and communication between the slave stations and the master station. The locationing operation of the present invention may be initiated by the user device. | 09-15-2011 |
20120056786 | LOCATION ESTIMATION FOR WIRELESS DEVICES - In an example embodiment, there is disclosed herein, an apparatus comprising an interface and location determination logic coupled with the interface. The location determination logic receives data representative of measured signal strengths for a wireless device from a plurality of receiving devices at known locations via the interface. The location determination logic determines an estimated location based on the measured signal strengths and a first transmit power for the wireless device. The location determination logic determines a revised transmit power for the wireless device based on the measured signal strengths from the plurality of devices at known locations and the estimated location. The location determination logic determines a revised estimated location based on the measured signal strengths and the revised transmit power for the wireless device. | 03-08-2012 |
20120086607 | WIRELESS TIME REFERENCE SYSTEM AND METHOD - Various methods and apparatuses that utilize a wireless time reference system are provided herein. One example method involves calibrating independent, spatially-located clocks of a geoposition system in order to geolocate an object having an associated object tag. The example method may include transmitting an RF pulse pair, receiving the pulse pair at multiple locations, utilizing respective frequencies of first and second spatially-located clocks to produce count values to effect measurement of an interarrival interval at each of multiple locations, determining a ratio of count values relative to said first and second spatially-located clocks, and utilizing said ratio to calibrate time indications of said clocks. Other related methods and apparatus are also provided. | 04-12-2012 |
20120194389 | RADIO POSITIONING - Methods and systems are disclosed for radio positioning of a mobile receiver using a virtual positioning reference established by logging a known position of the mobile receiver together with a local time at which a first instance of a predictably repeated code word is received by the mobile receiver from a terrestrial radio signal transmitter. During movement of the mobile receiver from the first known position to a second unknown position, a local clock is used to determine the time difference between when the virtual positioning reference is predicted to receive a second instance of the code word and when the mobile receiver actually receives the second instance of the code word. | 08-02-2012 |
20120274515 | POSITIONING SYSTEM AND METHOD - The present invention relates to a positioning system and method. The system and the method are particularly well-suited for indoor positioning of several idle objects or moving objects, preferably with very short time between two successive position determinations. According to the invention, two signals of different propagation velocities (preferably ultra-sound and radio frequency) are sent out by an object. Alternatively, the radio signal can be sent out from a central unit. Preferably the transmission takes place simultaneously. Based on the time difference between reception of the two signals at two or more base receivers, the position of the object relative to the basic positions is determined. | 11-01-2012 |
20120274516 | Positioning - A positioning method comprising: solving a geometric algebraic expression that relates: position vectors for a plurality of antennas relative to a shared origin, a putative position vector for the shared origin and phase information measured at each of the plurality of antennas, to determine a position vector for the shared origin; and positioning an apparatus using the determined position vector for the shared origin. | 11-01-2012 |
20120280865 | Range Localization System - The location of a transmitter can be determined by accurately measuring the elapsed time that it takes for a signal to propagate from a transmission source to a plurality of disparate receivers of a known location. By comparing the received transmitted signal to reference signal a range between each receiver and the transmitter can be determined. By intersecting the spheres defined by each range an accurate location of the transmitter can be obtained. | 11-08-2012 |
20120280866 | Systems and Methods for Using a Satellite Positioning System to Detect Moved WLAN Access Points - The disclosed subject matter generally relates to hybrid positioning systems and methods and, more specifically, systems and methods of detecting moved WLAN assess points using a wireless local area network based positioning system (WLAN-PS) and a satellite-based positioning system (SPS) with at least two satellites measurement. | 11-08-2012 |
20130076568 | RFID LOCATION SYSTEMS AND METHODS - Embodiments of the present invention include radio frequency identification location systems and methods. In one embodiment, RF signals are transmitted from one or more RFID readers, and in accordance therewith, backscattered signals are received from a tag to be located. A plurality of measured position parameters are used to determine a location of the tag. In one embodiment, one reader may transmit and three readers may receive signals to determine the position of a tag. In other embodiments, multiple readers may transmit and receive. In another embodiment, one reader may transmit from different positions to locate a tag. Embodiments of the invention may be used to track a moving tag. A reader's position may be determined using GPS, reference tags, or the reader may be positioned in a known location. A map may be provided to a user to display the location or movement of a tag or a corresponding item. | 03-28-2013 |
20130076569 | SYSTEM AND METHOD OF GATHERING WLAN PACKET SAMPLES TO IMPROVE POSITION ESTIMATES OF WLAN POSITIONING DEVICE - In one embodiment, techniques are employed to estimate a position of a wireless local area network (WLAN) enabled mobile device. The mobile device sniffs one or more WLAN packets destined for one or more WLAN devices other than the mobile device. Information identifying one or more WLAN APs is extracted from the one or more WLAN packets destined for the one or more WLAN devices other than the mobile device. A record of the one or more WLAN APs is generated that includes at least some of the extracted information. A WLAN positioning system (WPS) is cooperated with, to use the generated record of the one or more WLAN APs to obtain an estimate of a position of the mobile device. | 03-28-2013 |
20130214975 | TARGET LOCATION POSITIONING METHOD AND DEVICE - An inventive precision pinpoint tracking method and system is provided for devices that provide spot location measurements of objects. Embodiments of the location measuring device have a RF antenna, a tracking module in electrical communication with the RF antenna, and a tilt-compensated (TC) compass. In embodiments of the location measuring device, a measuring tip is offset at a distal end from the tracking module and the RF antenna is located at the proximal end of the tracking module. In embodiments, the TC compass provides data to calculate a translation of the position of the measuring tip with respect to the RF antenna to enable spot measurements of locations of a target object. | 08-22-2013 |
20130214976 | METHOD FOR LOCALIZING AN OBJECT - A method for localizing an object, including the acts of: transmission of a first signal by a first transmitter assigned to the object and of a second signal by at least one second transmitter; reception of the first and of the second signal by at least three receivers; in each receiver and for the first and the second signal: a) generation of a first and of a second reference signal; b) correlation between the first signal and the first reference signal and between the second signal and the second reference signal; c) interpolation of samples resulting from the correlation; d) deduction of the propagation time of the first and of the second signal; e) calculation of the difference between the propagation times of the first and of the second signal; and, by triangulation, deduction of the position of the object. | 08-22-2013 |
20130328727 | METHOD AND SYSTEM FOR POSITIONING MOBILE UNITS BASED ON ANGLE MEASUREMENTS - A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected mobile unit are selectively instructed to measure and report information related to the position of the selected mobile unit. The reported information is used to compute a position of the selected mobile unit. | 12-12-2013 |
20140028500 | Positioning System - A positioning system includes a signal transmitter and a signal receiver. The signal transmitter is to be attached to a movable object and includes a transmitting module configured to transmit an electromagnetic wave. The signal receiver includes at least three receiving ports arranged on an imaginary plane defined by a first axis and a second axis perpendicular to the first axis, spaced apart from one another in a direction along each of the first and second axes, and configured to receive the electromagnetic wave respectively as received signals. The signal receiver further includes a calculating module for calculating a position of the signal transmitter relative to the signal receiver on the imaginary plane based on the received signals. | 01-30-2014 |
20140049429 | Collaborative Spatial Positioning - Disparate positional data derived from one or more positional determinative resources are fused with peer-to-peer relational data to provide an object with a collaborative positional awareness. An object collects positional determinative information from one or more positional resources so to independently determine its spatial location. That determination is thereafter augmented by peer-to-peer relational information that can be used to enhance positional determination and modify behavioral outcomes. | 02-20-2014 |
20140077999 | METHOD AND APPARATUS FOR DETECTING LOCATIONS OF MULTIPLE RADIO SOURCES - There are provided a method and apparatus for detecting the transmission locations of radio waves transmitted from multiple radio resources. The method of detecting the transmission locations of radio waves includes: calculating a plurality of direction angles indicating directions of a plurality of radio sources based on a plurality of measuring locations, and detecting a plurality of intersections of lines extending in directions made by the direction angles from the plurality of measuring locations; and selecting real locations of the radio sources from among the intersections using signal intensities of radio waves transmitted from the plurality of radio sources and wave attenuation based on distances from the plurality of measuring locations to the intersections | 03-20-2014 |
20140197990 | METHOD FOR ENHANCING LOCATION IDENTITY THROUGH INCORPORATION OF SHORTER RANGE COMMUNICATION AND SENSING (NEARLOCATE) - A method of determining location of a mobile device including estimating an absolute location using long range communication estimates, estimating a relative location based on shorter-range communications, receiving location information from a plurality of peer entities, and refining the absolute location and based on the received location information. | 07-17-2014 |
20140203972 | PERSONAL ITEMS NETWORK, AND ASSOCIATED METHODS - A personal items network, comprising a plurality of items, each item having a wireless communications port for coupling in network with every other item, each item having a processor for determining if any other item in the network is no longer linked to the item, each item having an indicator for informing a user that an item has left the network, wherein a user may locate lost items. A method for locating lost personal items, comprising: linking at least two personal items together on a network; and depositing one or both of time and location information in an unlost item when one of the items is lost out of network. | 07-24-2014 |
20140232600 | Outdoor Object Location System and Method Thereof - A system and method for locating an object is provided. A locating circuit substantially secured to the object. A plurality of monitoring units are positioned remotely from the locating circuit, each positioned in a different location, wherein at least a portion of the plurality of monitoring units are positioned in an outdoor environment. An omnidirectional signal is intermittently communicated between the locating circuit and the plurality of monitoring units. A calculator is in communication with each of the plurality of monitoring units. The calculator determines a duration of transmission time of the omnidirectional signal for each of the plurality of monitoring units, and the locating circuit. The calculator calculates a location of the locating circuit using the determined duration of transmission time for each of the plurality of monitoring units and the locating circuit. | 08-21-2014 |
20140266914 | INDOOR POSITIONING WITH RADIO FREQUENCY CHIRP SIGNAL PROPAGATION DELAY MEASUREMENT - A radio frequency locator system and method. First, second and third reference devices are operable to transmit a plurality of spread spectrum chirp signals frequency offset from one another. An object device is operable to receive the plurality of spread spectrum chirp signals, the object device is further operable to evaluate the received plurality of spread spectrum chirp signals for relative phase shifts between the plurality of spread spectrum chirp signals and derive a fine propagation time between the reference devices and the object device using the phase shifts between the spread spectrum chirp signals. The reference devices determine their location independent of the object device and determine the location of the object device as a function of each of their locations and of their range to the object device. | 09-18-2014 |
20140266915 | TECHNIQUES TO IMPROVE THE PERFORMANCE OF A FIXED, TIMING-BASED RADIO POSITIONING NETWORK USING EXTERNAL ASSISTANCE INFORMATION - Described are systems and methods for correcting range bias based on geometric system properties, and for correcting bias by using velocity estimates. | 09-18-2014 |
20140333481 | METHOD FOR LOCATING THE POSITION OF A VEHICLE - A method for locating the position of a vehicle having a transceiver. An estimate of the position of the vehicle is first determined by using at least three spaced apart receivers by performing trilateration with the three receivers. Thereafter, two of the receivers which intersect the vehicle at an angle closest to 90 degrees at a solution closest to the estimate of the vehicle position is used to perform implicit triangulation of the vehicle position using only the two receivers. The new position of the vehicle is used to update the estimated vehicle position. | 11-13-2014 |
20140333482 | METHODS OF POSITION-LOCATION DETERMINATION USING A HIGH-CONFIDENCE RANGE, AND RELATED SYSTEMS AND DEVICES - Methods of position-location determination are provided. The methods may include determining a first range for a wireless user device, using signaling from a high-confidence first ranging source. The methods may include determining a second range for the wireless user device, using signaling from a second ranging source that corresponds to a lower confidence than the high-confidence first ranging source. Moreover, the methods may include determining a position-location of the wireless user device by using a first geometric shape that is defined based on the first range. Related wireless user devices and central systems and/or central devices are also described. | 11-13-2014 |
20140361928 | METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT IMPROVING REAL TIME LOCATION SYSTEMS WITH MULTIPLE LOCATION TECHNOLOGIES - Systems, methods, apparatuses, and computer readable media are disclosed for improving, in some examples, real time location systems with multiple location technologies. In one embodiment, a method is provided including receiving blink data from a location tag associated with a first sensor; receiving proximity data generated based on communications between the first sensor and a second sensor, the proximity data including a sensor identifier; calculating location data associated with the location tag based on the blink data; and determining sensor position calculation data associated with the first sensor based on the proximity data. | 12-11-2014 |
20140368387 | METHOD AND SYSTEM FOR SIMULTANEOUS RECEIVER CALIBRATION AND OBJECT LOCALISATION FOR MULTILATERATION - An apparatus for multilateration of a plurality of P objects, each having a transmitter device, and each transmitter device transmitting a signal, the apparatus including N sensors, a processing unit, each sensor receiving the transmitted signals and determining receive times of each signal. The processing unit performing steps: A. combining receive times for signals into a chronologically ordered series of message sets, wherein each message sets comprises the receive times of one of the transmitted signals, B. collecting all valid message sets that occur within a predetermined time interval, wherein k denotes a time step, and wherein each valid message set contains receive times from at least N sensors, C. estimating a time offset vector O | 12-18-2014 |
20160139238 | SYSTEM AND METHOD FOR RFID INDOOR LOCALIZATION - Disclosed is a system for RFID indoor localization for estimating location of a target object in a localization area, comprising: a radio frequency identification (RFID) unit comprising a RFID reader and a plurality of RFID antennas in operative communication with the RFID reader; and a central unit in operative communication with the RFID unit. The central unit is capable of configuring and distributing a plurality of passive reference tags in the localization area and further capable of: collecting data from the passive reference tags through the RFID unit; processing the collected data; and estimating location of the target object. The central unit employs learning-based location estimation by received signal strength RSSI and detection rate fingerprinting of passive reference tags and the use of tags with different backscattered range. | 05-19-2016 |
20160154087 | Method, Apparatus, and Computer Program Product for Processing Received Signals for Locating | 06-02-2016 |
20160154100 | Aid system and method for visually impaired or blind people | 06-02-2016 |
20180024223 | METHOD AND SYSTEM FOR DETERMINING PRECISE ROBOTIC POSITION AND ORIENTATION USING NEAR-SIMULTANEOUS RADIO FREQUENCY MEASUREMENTS | 01-25-2018 |