Covariance matrix estimation; DAR; GLRT; MIMO radar; target detection; Automotive radar; Automotive radar system; Distributed aperture radar; Distributed apertures; Dynamic nature; Generalized Likelihood Ratio Test; Radar target detection; Sensor platform; Targets detection; Software; Signal Processing; Electrical and Electronic Engineering
Abstract :
[en] This paper presents an approach to target detection in automotive radar systems, where the highly dynamic nature of the sensor platform and environment, along with challenges such as hardware cost and installation constraints, necessitates a general sensor configuration that integrates widely separated, colocated MIMO, and distributed aperture radar (DAR). A joint Doppler processing and MIMO transmit demodulation technique is proposed, utilizing arbitrary DDM, TDM, or BPM precoding matrices with a lower-dimensional antenna steering matrix as the detection input. The signal model incorporates environmental information, such as the cell under test (CUT) range and line-of-sight regions, to enhance detection performance. A distributed Generalized Likelihood Ratio Test (GLRT) detector is derived using secondary data with CFAR property, and the robustness of the proposed detectors is evaluated under mismatch conditions using mesa plots. Simulation results demonstrate the effectiveness of the proposed approach, evaluated using key performance metrics such as probability of detection, probability of false alarm.
Disciplines :
Electrical & electronics engineering
Author, co-author :
AHMADI, Moein ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > PI Ottersten
Bhavani Shankar, M.R.; Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, Luxembourg
Stifter, Thomas; IEE S.A., Luxembourg
External co-authors :
yes
Language :
English
Title :
Automotive Radar Target Detection in Widely Separated and Distributed Aperture Radar Systems
Original title :
[en] Automotive Radar Target Detection in Widely Separated and Distributed Aperture Radar Systems
Publication date :
06 April 2025
Event name :
ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
This work was supported in part through the FNR CORE R4DAR project C23/IS/18049793/R4DAR, and through a collaboration between SnT and the company IEE (https://iee-sensing.com/) in a research project focusing on distributed collaborative connected MIMO-Radars, supported by the Luxembourg Ministry of the Economy (grant CVN 26/19/RED).
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