TY - GEN
T1 - Target detection for passive radar with noisy reference channel
AU - Cui, Guolong
AU - Liu, Jun
AU - Li, Hongbin
AU - Himed, Braham
PY - 2014
Y1 - 2014
N2 - This paper considers the problem of target detection in a passive radar consisting of a reference channel (RC) and a surveillance channel (SC). The RC receives an unknown source signal directly transmitted by a non-cooperative illuminator of opportunity (IO), whereas the SC collects target echoes due to the illumination by the same IO. The conventional solution to this passive detection problem is a cross-correlation (CC) based detector that cross-correlates the reference signal from the RC and the surveillance signal from the SC. It is known that the CC detector is very sensitive to the noise level in the RC. In this paper, we develop four detection algorithms based on the generalized likelihood ratio test principle, by treating the unknown source signal from the IO to be deterministic or stochastic and under conditions whether the noise variance is known or unknown. Our results demonstrate that when the reference signal is noisy, three of the proposed detectors offer significant improvements in detection performance over the CC detector.
AB - This paper considers the problem of target detection in a passive radar consisting of a reference channel (RC) and a surveillance channel (SC). The RC receives an unknown source signal directly transmitted by a non-cooperative illuminator of opportunity (IO), whereas the SC collects target echoes due to the illumination by the same IO. The conventional solution to this passive detection problem is a cross-correlation (CC) based detector that cross-correlates the reference signal from the RC and the surveillance signal from the SC. It is known that the CC detector is very sensitive to the noise level in the RC. In this paper, we develop four detection algorithms based on the generalized likelihood ratio test principle, by treating the unknown source signal from the IO to be deterministic or stochastic and under conditions whether the noise variance is known or unknown. Our results demonstrate that when the reference signal is noisy, three of the proposed detectors offer significant improvements in detection performance over the CC detector.
KW - Cross-correlation detector
KW - generalized likelihood ratio test (GLRT)
KW - passive radar
KW - reference channel
UR - http://www.scopus.com/inward/record.url?scp=84906719534&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84906719534&partnerID=8YFLogxK
U2 - 10.1109/RADAR.2014.6875573
DO - 10.1109/RADAR.2014.6875573
M3 - Conference contribution
AN - SCOPUS:84906719534
SN - 9781479920341
T3 - IEEE National Radar Conference - Proceedings
SP - 144
EP - 148
BT - 2014 IEEE Radar Conference
T2 - 2014 IEEE Radar Conference, RadarCon 2014
Y2 - 19 May 2014 through 23 May 2014
ER -