Title :
System Design of a 77 GHz Automotive Radar Sensor with Superresolution DOA Estimation
Author :
Wenig, Peter ; Schoor, Michael ; Günther, Oliver ; Yang, Bin ; Weigel, Robert
Author_Institution :
Univ. of Erlangen-Nuremberg, Erlangen
fDate :
July 30 2007-Aug. 2 2007
Abstract :
This paper introduces a novel 77 GHz FMCW automotive long range radar (LRR) system concept. High resolution direction of arrival (DOA) estimation is an important requirement for the application in automotive safety systems. The challenges in system design regarding low cost and superresolution signal processing are discussed. Dominant interferences to the MUSIC DOA estimator are amplitude and phase mismatches due to inhomogeneous antenna patterns. System simulation results deliver design guidelines for the required signal-to-noise ratio (SNR) and the antenna design. Road traffic measurements with a demonstrator system show superior DOA resolution and demonstrate the feasibility of the design goals.
Keywords :
CW radar; FM radar; antenna radiation patterns; direction-of-arrival estimation; radar antennas; radar resolution; road vehicle radar; FMCW; MUSIC DOA estimator; SNR; amplitude mismatches; automotive long range radar; automotive radar sensor; automotive safety systems; direction of arrival estimation; frequency 77 GHz; inhomogeneous antenna patterns; phase mismatches; signal-to-noise ratio; superresolution DOA estimation; Automotive engineering; Costs; Direction of arrival estimation; Interference; Multiple signal classification; Radar signal processing; Safety; Sensor systems; Signal design; Signal resolution; Automotive radar; antenna arrays; array signal processing; direction of arrival estimation; system analysis and design;
Conference_Titel :
Signals, Systems and Electronics, 2007. ISSSE '07. International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-1448-2
Electronic_ISBN :
1-4244-1449-0
DOI :
10.1109/ISSSE.2007.4294531
