172300 ⎘
Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves; Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
METHOD AND SYSTEM OF DETERMINING A LOCATION CHARACTERISTIC OF A RFID TAG
#302Monitoring the movement of mobile communication devices
#303Compact single-aperture antenna and navigation system
#304Radar apparatus
#305High resolution, arbitrary-even-order direction finding method and device
#306Radar apparatus
#307Methods and systems for frequency independent bearing detection
#308Antenna Arrangement
#309Method for determining the orientation of an antenna array
#310System and method for passively estimating angle and range of a source using signal samples collected simultaneously from a multi-aperture antenna
#311Apparatus for measuring azimuth by using phase difference and method of using the same
#312Digitizer arrangement
#313Low-cost doppler frequency shift measuring device
#314Method for Processing Signals in a Direction-Finding System
#315Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system
#316Method and arrangement for determining the spatial frequency of a signal
#317Wireless communication device and method for searching for wireless communication device
#318Arrival direction estimation apparatus
#319MULTI-DIMENSIONAL IMAGING METHOD AND APPARATUS
#320Determination of time-difference of arrival and angle of arrival
#321System and method for passively estimating angle and range of a source using signal samples collected simultaneously from a multi-aperture antenna
#322Electronically scanning direction finding antenna system
#323Radio signal direction finder
#324Calibration method, device and computer program
#325Method and apparatus for direction finding using phase comparison
#326Antenna system and method for measuring the azimuth and elevation angles of an active, signal sending radiosonde
#327Vehicle obstacle warning radar
#328Methods and apparatus for automotive radar sensors
#329Detecting system
#330Direction finding method and system using digital directional correlators
#331Interferometer arrangement for unambiguous determination of an angle of incidence of incident electromagnetic radiation
#332Method and apparatus for recognizing predetermined particular part of vehicle
#333Random antenna array interferometer for radio location
#334Attitude measurement using a GPS receiver with two closely-spaced antennas
#335Zero-balance phase measurement circuit
#336Devices, systems, and methods for countering drone countermeasures
#337Boresight method with various methods
#338Short baseline interferometer (sbi) geolocation using nelder-mead
#339Systems and methods for determining an angle of arrival of a signal at a planar array antenna
#340Systems and methods for detecting unmanned aerial vehicles via radio frequency analysis
#341LPD descriptor word based geolocation
#342Systems and methods for stereo radar tracking
#343Angle of arrival and departure using standard bluetooth low energy packets
#344Beamforming transmission with analog hardware resource sharing
#345Beamforming based on localization module information
#346Multifunction channelizer/DDC architecture for a digital receiver/exciter
#347Interferometric direction finding antenna
#348Boresight method
#349Phase difference of arrival geolocation
#350Hybrid estimation DF algorithm