Title :
Automobile Doppler speedometer
Author :
Kleinhempel, Werner
Author_Institution :
Deutsche Aerospace AG, Ulm, Germany
Abstract :
Cars with electronically controlled all-wheel drive, antiblocking systems or anti slip control require speed sensors, measuring true speed over ground (TSOG). By comparing wheel speed and TSOG value, information about blocking or slipping rates is obtained. A Doppler radar sensor for TSOG measurements is presented, based on millimeter-wave frontends and digital processing of baseband signals. For the estimation of the Doppler frequency an FFT-based method extended by sensor-model-based algorithms for postprocessing is used. Measurement results are given, showing excellent system performance even under adverse environmental conditions.
Keywords :
automotive electronics; Doppler radar sensor; Doppler speedometer; FFT-based method; baseband signals; millimeter-wave frontends; postprocessing; speed sensors; system performance; true speed over ground; Automobiles; Control systems; Doppler radar; Frequency estimation; Millimeter wave measurements; Millimeter wave radar; Millimeter wave technology; Sensor systems; Velocity measurement; Wheels;
Conference_Titel :
Vehicle Navigation and Information Systems Conference, 1993., Proceedings of the IEEE-IEE
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-1235-X
DOI :
10.1109/VNIS.1993.585683
