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Class Information
Number: 342/99
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Return signal controls radar system > Receiver > Frequency > Doppler frequency tracking
Description: Subject matter wherein circuitry is provided to follow variations in the doppler component of the returned signal.

Sub-classes under this class:

Class Number Class Name Patents
342/101 With filter control 61
342/100 Wtih local osillator control 75

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8645053 Relative vehicular positioning using vehicular communications Feb. 4, 2014
8633805 Systems and methods to determine motion parameters using RFID tags Jan. 21, 2014
8576664 Moving object detection system Nov. 5, 2013
8559491 Methods and devices for determining the impulse response of propagation channels involving emitters, reflectors and sensors that are fixed or mobile Oct. 15, 2013
8355473 Methods and systems with simplified doppler spread classification Jan. 15, 2013
8242888 Systems and methods to determine motion parameters using RFID tags Aug. 14, 2012
8188911 Low noise generator for frequency swept signals May. 29, 2012
8170135 Methods and apparatus for emitter detection May. 1, 2012
8149159 Radar coasting during data dropout Apr. 3, 2012
7995682 Method and apparatus for performing signal processing using historical correlation data Aug. 9, 2011
7970083 Estimating doppler frequency in ISDB-T systems Jun. 28, 2011
7970081 Delay-doppler channel response demodulation method and apparatus Jun. 28, 2011
7911375 Doppler beam-sharpened radar altimeter Mar. 22, 2011
7876262 Radar system Jan. 25, 2011
7856066 OFDM receiver and doppler frequency estimating circuit Dec. 21, 2010
7768963 System and method of improving sampling of WLAN packet information to improve estimates of Doppler frequency of a WLAN positioning device Aug. 3, 2010
7756498 Channel estimator and method for changing IIR filter coefficient depending on moving speed of mobile communication terminal Jul. 13, 2010
7714782 Phase arrays exploiting geometry phase and methods of creating such arrays May. 11, 2010
7626536 Non-scanning radar for detecting and tracking targets Dec. 1, 2009
7579976 Systems and methods for discriminating signals in a multi-band detector Aug. 25, 2009
7561098 System and method for estimating airborne radar antenna pointing errors Jul. 14, 2009
7456740 Detector device Nov. 25, 2008
7405869 Method and system of local oscillator signal generation Jul. 29, 2008
7375676 Mutual interference processor for pulse radar May. 20, 2008
7376210 Apparatus and method for performing adaptive channel estimation in a mobile communication system May. 20, 2008
7336218 Radar system with peak frequency analysis and window functions Feb. 26, 2008
7324041 Method for solving two RF signals' angular position Jan. 29, 2008
7317417 Methods for detection and tracking of targets Jan. 8, 2008
7248208 Methods and systems for maintaining a position during hovering operations Jul. 24, 2007
7218274 System and method for detection and tracking of targets May. 15, 2007
7176826 System and method for detection of emitter signals using multiple intercept rules Feb. 13, 2007
7164737 Method for estimating doppler frequency Jan. 16, 2007
7136013 Radio-wave radar system and adaptive cruise control system Nov. 14, 2006
7068209 System and method for detecting and jamming emitter signals Jun. 27, 2006
7053815 Radar tracking system May. 30, 2006
6995705 System and method for doppler track correlation for debris tracking Feb. 7, 2006
6972710 Automotive radio wave radar and signal processing Dec. 6, 2005
6933878 Wide bandwidth radar Aug. 23, 2005
6801155 Method and apparatus for recognising a radar target Oct. 5, 2004
6677887 Intrusion detection radar system Jan. 13, 2004
6653974 Method for clearly determining the intermediate frequency difference in a frequency-controlled radar system Nov. 25, 2003
6636174 System and method for detection and tracking of targets Oct. 21, 2003
6556942 Short range spread-spectrum radiolocation system and method Apr. 29, 2003
6553007 Compensation of doppler shift in a mobile communication system Apr. 22, 2003
6518916 Object recognition apparatus Feb. 11, 2003
6498580 Missile launch point estimation system Dec. 24, 2002
6433730 Noise riding threshold control with immunity to signals with high pulse repetition frequencies and high duty cycles Aug. 13, 2002
6429804 Motor-vehicle-mounted radar apparatus Aug. 6, 2002
6297764 Radar receiver having matched filter processing Oct. 2, 2001
6275182 Radome polarization error compensation Aug. 14, 2001

1 2 3

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