Speed measure of vehicles with on-board Doppler radar

Author

Kleinhempel, W. ; Bergmann, D. ; Stammler, W.

Author_Institution

Telefunken Systemtechnik GmbH, Konstanz, Germany

fYear

1992

fDate

12-13 Oct 1992

Firstpage

284

Lastpage

287

Abstract

The system configuration of an on-board Doppler radar system is presented which is based on millimeter wave frontends (61 GHz) and digital processing of baseband signals. For the estimation of the Doppler frequency a novel method is used which is based on FFT-techniques and on sensor model based algorithms for postprocessing. Here postprocessing means that the measured Doppler spectra are correlated with theoretically calculated spectra. The signal processing algorithm has been implemented on two Motorola´s DSP 56001 with 24 bit fixpoint arithmetic. The first only serves as an interface to the 14 Bit A/D-converter running at 540 kHz conversion rate. The complete evaluation unit consists of one Euro sized PCB. With the realized Doppler radar system speed values up to 250 km/h can be measured with an update rate of 25 Hz

Keywords

Doppler effect; radar applications; road vehicles; velocity measurement; 61 GHz; DSP 56001; EHF; FFT-techniques; baseband signals; digital processing; millimeter wave frontends; on-board Doppler radar system; sensor model based algorithms; signal processing; vehicle speed measurement;

fLanguage

English

Publisher

iet

Conference_Titel

Radar 92. International Conference

Conference_Location

Brighton

Print_ISBN

0-85296-553-2

Type

conf

Filename

187099