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Class Information
Number: 342/98
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Return signal controls radar system > Receiver > Frequency
Description: Subject matter including control of the receiver frequency.

Sub-classes under this class:

Class Number Class Name Patents
342/99 Doppler frequency tracking 112
342/102 Phase 30

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Apr. 29, 2014
8682821 Method for detection of movement of a specific type of object or animal based on radar signals Mar. 25, 2014
8645053 Relative vehicular positioning using vehicular communications Feb. 4, 2014
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
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Sep. 10, 2013
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Oct. 30, 2012
8170135 Methods and apparatus for emitter detection May. 1, 2012
8116408 Gain control for reduced interframe spacing (RIFS) Feb. 14, 2012
8116968 Method for identification of traffic lane boundary Feb. 14, 2012
8098193 Digitally controlled UWB millimeter wave radar Jan. 17, 2012
7994963 High-sensitivity subsurface sensing system Aug. 9, 2011
7750833 D/A conversion circuit and semiconductor device Jul. 6, 2010
7583224 Radar apparatus with automatic local oscillator tuning function Sep. 1, 2009
7579976 Systems and methods for discriminating signals in a multi-band detector Aug. 25, 2009
7411535 D/A conversion circuit and semiconductor device Aug. 12, 2008
7379013 Detecting objects within a near-field of a frequency modulated continuous wave (FMCW) radar system May. 27, 2008
7193555 System and method for detecting emitter signals in the presence of unwanted signals Mar. 20, 2007
7176826 System and method for detection of emitter signals using multiple intercept rules Feb. 13, 2007
7068209 System and method for detecting and jamming emitter signals Jun. 27, 2006
7019684 Phase lock loop circuitry Mar. 28, 2006
6995705 System and method for doppler track correlation for debris tracking Feb. 7, 2006
6831592 Near-vertical incidence HF radar Dec. 14, 2004
6801155 Method and apparatus for recognising a radar target Oct. 5, 2004
6753803 Signal detection Jun. 22, 2004
6691031 Method and apparatus for substituting sensor data for satellite signal in GPS receiver Feb. 10, 2004
6653974 Method for clearly determining the intermediate frequency difference in a frequency-controlled radar system Nov. 25, 2003
6650271 Signal receiver having adaptive interfering signal cancellation Nov. 18, 2003
6618001 Apparatus for detecting signal Sep. 9, 2003
6486826 Arrangement for the precise distance measuring, in particular the filling level measuring Nov. 26, 2002
6411199 Radio frequency identification system Jun. 25, 2002
6297764 Radar receiver having matched filter processing Oct. 2, 2001
6295017 Jammer detection and tracking system Sep. 25, 2001
6133865 CW converter circuit Oct. 17, 2000
6100845 Emitter location using RF carrier or PRF measurement ratios Aug. 8, 2000
6094588 Rapidly tunable, high-temperature superconductor, microwave filter apparatus and method and radar receiver employing such filter in a simplified configuration with full dynamic range Jul. 25, 2000
6091356 Chirp source with rolling frequency lock for generating linear frequency chirps Jul. 18, 2000
6072423 Method for measuring the doppler shift in a sensor system using ambiguous codes Jun. 6, 2000
5864313 Process for determining the intermediate frequency deviation in frequency pulsed radar systems Jan. 26, 1999
5654716 Circuit for short duration multiple look pulse based frequency measurement Aug. 5, 1997
5442362 Radar apparatus Aug. 15, 1995
5438332 Method of hardening transmissions, in particular between a control station and a transponder, and a device implementing the method Aug. 1, 1995
5355141 Channelized bearing processor Oct. 11, 1994
5175553 Telemetric process for measuring short distances Dec. 29, 1992
5059969 GPS satellite signal tracking method for GPS receivers Oct. 22, 1991
5036327 Single oscillator FSK pulsed radar receiving transmitter Jul. 30, 1991
5017921 Radar system and a method for operating a radar system May. 21, 1991
4888595 Acquisition signal transmitter Dec. 19, 1989
4600924 Automatic frequency control for radar receiver Jul. 15, 1986
4513285 Quasi coherent two-way ranging apparatus Apr. 23, 1985
4484193 Radar apparatus for detecting and/or classifying an agitated reflective target when relative translation obtains Nov. 20, 1984

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