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Class Information
Number: 342/424
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > With self-orienting antenna pattern > Plural antennas > Tracking interferometer
Description: Subject matter wherein means for the combined reception pattern of the antennas is automatically adjusted to direction of and in response to, an incoming signal.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8581781 Interferometric methods and systems Nov. 12, 2013
8570150 Sensing system and method with integral sensor locating capability Oct. 29, 2013
8548619 System and method for after-market support using as-built data Oct. 1, 2013
8228228 Apparatus and method for receiving electromagnetic waves using photonics Jul. 24, 2012
8077088 Method for single satellite geolocation of emitters using an ambiguous interferometer array Dec. 13, 2011
8063824 Magnitude-squared coherence filtering in a time difference of arrival (TDOA) or group delay interferometric geolocation system Nov. 22, 2011
7961147 Long baseline phase interferometer ambiguity resolution using frequency differences Jun. 14, 2011
7898479 System and method for signal extraction and angle of arrival determination Mar. 1, 2011
7705781 Histogram for ambiguity visualization and evaluation (HAVE) Apr. 27, 2010
7692586 Sparse interferometric array for radio frequency azimuth direction finding Apr. 6, 2010
7663548 Switched combiner GPS receiver system Feb. 16, 2010
7436359 Method for single satellite geolocation of emitters using an ambiguous interferometer array Oct. 14, 2008
H2224 Self-calibrating large baseline interferometer formed from two aircraft Oct. 7, 2008
7427953 Wireless communication apparatus for determining direction of arrival information to form a three-dimensional beam used by a transceiver Sep. 23, 2008
7421212 Detecting and locating pulses using a Bragg cell Sep. 2, 2008
7380455 System and method for resolving phase ambiguity of a transducer array to determine direction of arrival of received signals Jun. 3, 2008
7286085 Precision geolocation system and method using a long baseline interferometer antenna system Oct. 23, 2007
7268728 Moving transmitter correlation interferometer geolocation Sep. 11, 2007
7213442 Methods of arranging transducers and transducer arrays having reduced phase ambiguity for determining direction of arrival of received signals May. 8, 2007
7201054 System and method for resolving phase ambiguity of a transducer array to determine direction of arrival of received signals Apr. 10, 2007
7042393 Thinned array antenna system May. 9, 2006
7026990 Interferometer arrangement for unambiguous determination of an angle of incidence of incident electromagnetic radiation Apr. 11, 2006
6965343 System and method for antenna tracking Nov. 15, 2005
6839025 Precision direction finding sensing systems and methods Jan. 4, 2005
6784826 Body motion tracking system Aug. 31, 2004
6759981 Enhanced emitter location using adaptive combination of time shared interferometer elements Jul. 6, 2004
6744407 Method and device for space-time estimation of one or more transmitters Jun. 1, 2004
6697012 Altitude estimation system and method Feb. 24, 2004
6677884 Satellite configuration for interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) Jan. 13, 2004
6657591 Method and apparatus for joint identification and direction finding Dec. 2, 2003
6639552 Method of and apparatus for deriving a signal for enabling a radio wave source location to be derived Oct. 28, 2003
6593876 Adaptive microwave antenna array Jul. 15, 2003
6552684 Direction of arrival estimation method and radio reception apparatus Apr. 22, 2003
6421008 Method to resolve interferometric ambiguities Jul. 16, 2002
6421000 GPS multipath mitigation using a multi-element antenna array Jul. 16, 2002
6313794 Method of detection and determining an angular location of frequency agile emitters Nov. 6, 2001
6281841 Direction determining apparatus Aug. 28, 2001
6266585 Gyrocompassing by intermittent GPS interferometry Jul. 24, 2001
6255991 Low cost angle of arrival measurement system Jul. 3, 2001
6255992 Self-calibrating large baseline interferometer for very precise emitter location using time difference of arrival and time difference of arrival rate Jul. 3, 2001
6198436 Integrated interferometer and instantaneous frequency measurement device and method Mar. 6, 2001
6195043 AOA estimation and polarization induced phase correction using a conformal array of titled antenna elements Feb. 27, 2001
6184830 Compensation of direction finding estimates for polarimetric errors Feb. 6, 2001
6130644 Method and apparatus for geodetic surveying and/or earth imaging by satellite signal processing Oct. 10, 2000
6104346 Antenna and method for two-dimensional angle-of-arrival determination Aug. 15, 2000
5955993 Detection of spread spectrum signals Sep. 21, 1999
5955990 Linear interferometer antenna capable of making error-free azimuth and elevation angle measurements Sep. 21, 1999
5936575 Apparatus and method for determining angles-of-arrival and polarization of incoming RF signals Aug. 10, 1999
5924056 Device and method for measuring gravitation Jul. 13, 1999
5917448 Attitude determination system with sequencing antenna inputs Jun. 29, 1999

1 2 3

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