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Class Information
Number: 367/91
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Speed determination > By doppler effect > Vehicle mounted system for determining vehicle speed
Description: Subject matter in which the echo system is supported by a moving platform whose relative speed is determined.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8217766 Vehicle presence notification apparatus Jul. 10, 2012
8217767 Vehicle presence notification apparatus Jul. 10, 2012
8212656 Vehicle presence notification apparatus Jul. 3, 2012
7791529 System for estimating the speed of an aircraft, and an application thereof to detecting obstacles Sep. 7, 2010
7738318 Method and apparatus for fault-tolerant, correlation SONAR processing Jun. 15, 2010
7420875 Methods and systems for use of an acoustic doppler current profiler for measurement of compact jets Sep. 2, 2008
7133327 Method and system for measuring the velocity of a vessel relative to the bottom using velocity measuring correlation sonar Nov. 7, 2006
6941196 Modified three lobe search method Sep. 6, 2005
6445338 Detecting apparatus of vehicle speed Sep. 3, 2002
6326887 Vehicle parking aid system Dec. 4, 2001
6314053 Method for detecting mobile objects with active sonar Nov. 6, 2001
6229761 Estimating ship velocity through the water and over the ground May. 8, 2001
6097671 Pinwheel transducer array Aug. 1, 2000
5808967 Two-dimensional array transducer and beamformer Sep. 15, 1998
5694372 Sonar system for current meter and doppler log Dec. 2, 1997
5583800 Vehicle speed sensor utilizing relationship between vehicle wheel speed and doppler-effect speed Dec. 10, 1996
5475620 Ultrasonic measuring system Dec. 12, 1995
5371718 Doppler-effect vehicle ground speed detecting apparatus having means for sensing abnormality of detected ground speed Dec. 6, 1994
5315562 Correlation sonar system May. 24, 1994
5287329 Doppler-effect vehicle ground speed detecting apparatus with means for adjusting frequency of generated wave Feb. 15, 1994
5243564 Doppler-effect vehicle ground-speed detecting apparatus having means for detecting vehicle body inclination Sep. 7, 1993
5239516 Ultrasonic ground speedometer utilizing doppler effect of ultrasonic waves Aug. 24, 1993
5235557 Combined speed and depth sensor transducer Aug. 10, 1993
5224075 Apparatus for measuring the velocity of a moving body Jun. 29, 1993
5148409 Ultrasonic ground speedometer utilizing Doppler effect Sep. 15, 1992
5097453 Ultrasonic ground speedometer utilizing doppler effect Mar. 17, 1992
5077700 Doppler velocity profiler Dec. 31, 1991
5054003 Ultrasonic ground speedometer utilizing doppler effect Oct. 1, 1991
5050133 Marine current determination Sep. 17, 1991
5038612 Ultrasonic measuring device Aug. 13, 1991
5028920 Driver alerting device Jul. 2, 1991
4942558 Ultrasonic velocity sensor Jul. 17, 1990
4914639 Sonar doppler system with a digital adaptive filter Apr. 3, 1990
4893287 Velocity reference system Jan. 9, 1990
4837750 Apparatus for displaying depth sounding data with nautical range Jun. 6, 1989
4728954 Ground velocity sensor with drop-out detection Mar. 1, 1988
4689624 Vehicle speedometer Aug. 25, 1987
4680739 Process for removing all ambiguity from the measurement by Doppler effect of the speed of a moving target Jul. 14, 1987
4506353 Measuring apparatus for the automatic measurement of speed, travelled distance and directional changes of a movable body Mar. 19, 1985
4296482 Parametric array Doppler sonar apparatus Oct. 20, 1981
4282586 Doppler log Aug. 4, 1981
4270191 Doppler current meter for use at great depths May. 26, 1981
4216537 Sonar for the topographic representation of a submerged surface and underlying strata Aug. 5, 1980
4138657 Shipboard apparatus for measuring ocean currents Feb. 6, 1979
4104912 System for taking current-metering measurements Aug. 8, 1978
4105991 Acoustic wave transmitter-receiver Aug. 8, 1978
4103279 Diver navigation system Jul. 25, 1978
4069468 Doppler spectral measurement Jan. 17, 1978
4065745 Doppler speedometer Dec. 27, 1977
4065744 Doppler navigation method for determining the distance travelled by a vehicle Dec. 27, 1977

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