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342 - Communications: directive radio wave systems and devices (e.g., radar, radio navigation)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
342020000 Detection of surveilance 34
342014000 ECM (Electronic countermeasures, i.e., jamming) 34
342016000 ECCM (Electronic counter-countermeasures, i.e., antijamming) 15
20100045506Method And System For Locating Signal Jammers - In a method embodiment, a method includes receiving data generated at one or more monitor systems capable of monitoring for electromagnetic signals. The data is related to characteristics of a signal. The characteristics may include at least two of a respective power of the signal, a respective frequency of the signal, a time of arrival of the signal, and an angle of arrival the signal. A computing system automatically selects at least a subset of the received data. The selection is based at least partially on a physical condition at a location proximate to the monitor systems. The computing system calculates a location of a source of the signal at least in part by processing the subset of the received data. The method further includes determining that the first signal is jamming a second signal. The determination is based at least in part on the calculated location.02-25-2010
20090009378System and Method of Analyzing Radar Information - The present invention provides a method and system of analyzing radar information of a radar system. According to certain embodiments of the invention, the method comprises: providing radar information including at least a portion modified in response to an EWE (electronic-warfare) action; obtaining position data corresponding to at least a position of a target associated with the EW action with respect to the radar system; and analyzing the radar information for comparing it with the position data, thereby allowing to determine at least one effect of the EW action on the radar information.01-08-2009
20090322584THREAT PRIORITIZATION USING ENGAGEMENT TIMELINE - A method for prioritizing threats to an aircraft is disclosed. The method can include providing threat attribute information including a threat engagement timeline and a threat lethality metric and obtaining a threat track indication that indicates a threat is tracking the aircraft. The method can also include determining a historical position estimate of the aircraft at which the threat track began, a time estimate at which the threat track began and determining a period of time during which the threat track has been possible. The method can also include determining a time to engagement based on the threat attribute information and the time period and calculating a priority value for the threat based on the time to engagement and the threat lethality metric. The method can include outputting a prioritized threat list including the priority value calculated for the threat.12-31-2009
20100295717WEAPON DETECTION AND ELIMINATION SYSTEM - A system for causing an electrical effect in a weapon. A system for detecting a location and a size of a weapon. A system for transmitting electromagnetic radiation towards the weapon at a frequency and a vector orientation to optimize generation of electrical effects in the weapon.11-25-2010
20110095934IDENTIFICATION AND ANALYSIS OF SOURCE EMISSIONS THROUGH HARMONIC PHASE COMPARISON - The present invention is a signal processing method to significantly improve the detection and identification of source emissions. More particularly, the present invention offers a processing method to reduce the false alarm rate of systems which remotely detect and identify the presence of electronic devices through an analysis of a received spectrum the devices' unintended emissions. The invention identifies candidate emission elements and determines their validity based on a frequency and phase association with other emissions present in the received spectrum. The invention compares the measured phase and frequency data of the emissions with a software solution of the theoretically or empirically derived closed-form expression which governs the phase and frequency distribution of the emissions within the source. Verification of this relationship serves to dramatically increase the confidence of the detection.04-28-2011
20080218399METHODS AND APPARATUS FOR CREATING A SCAN STRATEGY - Some embodiments of the invention are directed to generating a scan strategy based on parameters input from a user, without requiring that the user be aware of information such as the specifics of the receiver hardware or the specific signal characteristics of the emitters that are desired to be detected.09-11-2008
20110095933Detection and Location of Radio Frequency Weapons From High Altitude Glider System - A method and system for detecting and locating RF weapons being used against aircraft. Large geographic regions may be defended by equipping a constellation of high-altitude airborne platforms with RF detectors, GPS receivers and a communications unit. The communications unit downlinks data indicating an RF weapon pulse and associated time and location data. From this data, a ground station performs a time difference of arrival (TDOA) location fix of the RF weapon.04-28-2011
20120154197GENETIC ALGORITHM ENHANCEMENT OF RADAR SYSTEM SURVIVABILITY - A process for enhancing radar system survivability against a threat includes the construction of multiple computational radar function chromosomes with each of the chromosomes having values for geometric configuration and operational parameters for at least one radar station emitter and at least one decoy. A genetic algorithm analysis is performed on a computer including a crossover operator and a mutation operator to determine a fitness value for multiple chromosomes against the threat. By configuring and operating the radar system based on a survivability value for the fitness value of the genetic algorithm analysis, radar system survivability against a threat is enhanced. A radar system employing genetic algorithm analysis is also provided.06-21-2012
20080297394Program to generate an aircrew display aid to assess jam effectiveness - The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.12-04-2008
20120268305Stealth detector - The idea for a Stealth Detector was generated by the statement of American military that Stealth technology could never be defeated. The American military stated Stealth technology allows a Stealth plane to send a very small radar signal back to a radar installation, that cannot be interpreted as a plane. So I thought in order to determine if a radar signal of an object is correctly being reported, is to not try to determine its shape, but to determine its size. I thought in order to determine the correct size of a radar object you will need a Stealth Detector composed of three radars. The three radars should be aimed at slightly different angles. The three radar signals will each send a radar signal back to a radar installation. Then a computer or human analyst should determine if the three radar signals show the object is a Stealth plane.10-25-2012
20100060507ELECTRONIC WARFARE RECEIVER HAVING DIGITAL ANTENNA - Methods and apparatus for detecting and measuring electromagnetic radiation using a digital antenna are provided. Receiver apparatus includes a digital antenna having an array of pixels, each pixel configured to produce a voltage that represents received photons at a photon frequency of the pixel, and a processing unit configured to sample the voltage of each pixel at multiple sampling times to acquire a set of voltage samples and to process the sets of voltage samples and corresponding sampling times to provide information on one or more detected signals represented by the received photons.03-11-2010
20120280848METHOD, SYSTEM AND PROGRAM PRODUCT FOR DEINTERLEAVING AND CLASSIFYING ARBITRARY RADAR PULSE PATTERNS USING NON-DETERMINSITIC FINITE STATE AUTOMATA - A method, a system and a program product for deinterleaving and classifying an incoming unknown radar pulse pattern uses a library of state machines that mesh with a library of known radar pulse patterns of a library of known radar emitter sources. A continuous sequence of radar pulse descriptor words is secured for the incoming unknown radar pulse pattern and a plurality of state machines that may mesh with the continuous sequence of radar pulse descriptor words is selected from the library of state machines. The plurality of state machines that may mesh with the incoming unknown radar pulse pattern is operated upon the incoming unknown radar pulse pattern. Radar emitter sources that correlate with state machines that actually mesh with the incoming unknown radar pulse pattern are designated as radar emitter sources that comprise the incoming unknown radar pulse pattern.11-08-2012

Patent applications in class RADAR EW (ELECTRONIC WARFARE)

Patent applications in all subclasses RADAR EW (ELECTRONIC WARFARE)