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Signal Processing Algorithm to Reduce False Targets in FMCW Automotive Radar
Technical Paper
2000-01-1355
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2000 World Congress
Language:
English
Abstract
A Frequency Modulated Continuous Wave (FMCW) radar using only in-phase channel is advantageous for automotive applications. In this radar, we have to search the pairs of beat frequencies in an up-chirp mode and a down-chirp mode for multiple targets similarly to conventional FMCW radar. However the number of combinations to search pairs is larger than that for the conventional FMCW radar. Therefore, false targets by mistaking the combination of these pairs increase. In this paper, we propose a novel signal processing algorithm to reduce the false targets. We extract only the beat frequencies of the relative moving targets using the differential of the frequency power spectra of the up-chirp mode and the down-chirp mode. We can reduce choosing incorrect pairs by separating stationary targets and moving targets. We have conducted some simulations to confirm the capability of the proposed algorithm. We show that the false target appearance probability is reduced to half or less without significant deterioration of detection probability.
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Citation
Mitsumoto, M., Kirimoto, T., Uehara, N., and Inatsune, S., "Signal Processing Algorithm to Reduce False Targets in FMCW Automotive Radar," SAE Technical Paper 2000-01-1355, 2000, https://doi.org/10.4271/2000-01-1355.Also In
SAE 2000 Transactions Journal of Passenger Cars - Electronic and Electrical Systems
Number: V109-7; Published: 2001-09-15
Number: V109-7; Published: 2001-09-15
References
- Rohling H. Lissel E 77GHz Radar Sensor for Car Application IEEE 1995 International Radar Conference Alexandria, USA 373 379, May 1995
- Lowbridge P. L. Low Cost Millimeter wave Radar Systems for Intelligent Vehicle Cruise Control Applications Microwave Journal Euro--Grobal Edition 38 10 20 33 Oct. 1995
- Skolnik M. I. Introduction to RADAR SYSTEMS McGraw-Hill, Inc 1969
- Mitsumoto, M. Uehara, N. Inatsune S. Kirimoto T. FMCW Automotive Radars using only In-phase Channel SAE99, 999-01-0486 1999