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Class Information
Number: 367/904
Name: Communications, electrical: acoustic wave systems and devices > Doppler compensation systems
Description: Acoustic wave systems wherein correction is provided for errors which would otherwise occur because of an apparant frequency shift in an acoustic wave due to relative movement between source and receiver.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7209529 |
Doppler compensated receiver |
Apr. 24, 2007 |
| 7027357 |
Acoustic communication device and acoustic signal communication method |
Apr. 11, 2006 |
| 6965753 |
Apparatus for performing doppler correction in a wireless communications system |
Nov. 15, 2005 |
| 6778467 |
Underwater sounding apparatus |
Aug. 17, 2004 |
| 6687188 |
Underwater telemetry apparatus and method |
Feb. 3, 2004 |
| 6512720 |
Underwater telemetry method using doppler compensation |
Jan. 28, 2003 |
| 6130859 |
Method and apparatus for carrying out high data rate and voice underwater communication |
Oct. 10, 2000 |
| 6072425 |
Terrain bias compensator for doppler navigation systems |
Jun. 6, 2000 |
| 5923281 |
Terrain bias compensator for doppler navigation systems |
Jul. 13, 1999 |
| 5805526 |
Echo detection doppler gate |
Sep. 8, 1998 |
| 5754497 |
Method for locating structure-borne sound events in pressure enclosures to be monitored in power plants |
May. 19, 1998 |
| 5732044 |
System and method for compensating for doppler shifts in signals by downsampling |
Mar. 24, 1998 |
| 5519402 |
Doppler shift compensation apparatus |
May. 21, 1996 |
| 5428581 |
Method for compensating for the movement of the antenna for a sonar |
Jun. 27, 1995 |
| 5337053 |
Method and apparatus for classifying targets |
Aug. 9, 1994 |
| 5184241 |
Doppler shift compensation system for laser transmitters and receivers |
Feb. 2, 1993 |
| 5130952 |
Broadband adaptive doppler estimator and canceller |
Jul. 14, 1992 |
| 5091890 |
Method of extracting target range and Doppler information from a Doppler-spread signal |
Feb. 25, 1992 |
| 5077702 |
Doppler consistent hyperbolic frequency modulation |
Dec. 31, 1991 |
| 4980868 |
Sonar system |
Dec. 25, 1990 |
| 4905211 |
Precision doppler effect compensator |
Feb. 27, 1990 |
| 4809235 |
Method for removing doppler phase dispersion from seismic data |
Feb. 28, 1989 |
| 4712200 |
Device for processing modulated signals received by a lateral sonar system |
Dec. 8, 1987 |
| 4586172 |
Adaptable filtering device and method for filtering sonar signals to remove reverberation signals due to vehicle speed and trim and the sea surface and sea bottom |
Apr. 29, 1986 |
| 4428073 |
Underwater depth telemetry |
Jan. 24, 1984 |
| 4349915 |
Minimization of multipath and doppler effects in radiant energy communication systems |
Sep. 14, 1982 |
| 4316269 |
Own doppler nullifier for sonar system |
Feb. 16, 1982 |
| 4274148 |
Digital time-delay beamformer for sonar systems |
Jun. 16, 1981 |
| 4208734 |
Underwater communication system |
Jun. 17, 1980 |
| 4207625 |
Doppler compensator for heterodyne correlation devices |
Jun. 10, 1980 |
| 4206510 |
Automatic detection and classification device |
Jun. 3, 1980 |
| 4204280 |
Underwater signal discrimination system |
May. 20, 1980 |
| 4203164 |
Secure sonar communication system |
May. 13, 1980 |
| 4200872 |
Doppler compensated digital non-linear waveform generator apparatus |
Apr. 29, 1980 |
| 4187491 |
Doppler compensated PSK signal processor |
Feb. 5, 1980 |
| 4169256 |
Digitally controlled oscillator |
Sep. 25, 1979 |
| 4084148 |
Object recognition system |
Apr. 11, 1978 |
| 4007331 |
Apparatus for demodulation of relative phase modulated binary data |
Feb. 8, 1977 |
| 3976968 |
Underwater target detection apparatus |
Aug. 24, 1976 |
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