TY - GEN
T1 - New Coherent and Hybrid Detectors for Distributed MIMO Radar with Synchronization Errors
AU - Zeng, Cengcang
AU - Wang, Fangzhou
AU - Li, Hongbin
AU - Govoni, Mark A.
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/5/7
Y1 - 2021/5/7
N2 - We examine the impact of synchronization errors on target detection in distributed multi-input multi-output (MIMO) radar. The problem was initially considered in a recent work [1], which also introduced an approximate coherent detector (ACD). The ACD neglects the cross correlation of the radar waveforms, which may be significant in distributed MIMO radar. As the sensors are spatially distributed, the waveforms undergo different propagation delays and Doppler frequencies and thus may lose mutual orthogonality. The problem becomes more severe in the presence of synchronization errors. In this paper, we propose an improved coherent detector (CD) that takes into account the cross correlation in phase compensation and exploits different signal strength among different transmit-receive (TX-RX) paths. We also propose a new hybrid detector (HD) as a trade-off solution, in terms of detection performance and synchronization requirement, to bridge coherent detection and non-coherent detection. Numerical results are presented to illustrate the performance of existing and proposed detectors with or without synchronization errors.
AB - We examine the impact of synchronization errors on target detection in distributed multi-input multi-output (MIMO) radar. The problem was initially considered in a recent work [1], which also introduced an approximate coherent detector (ACD). The ACD neglects the cross correlation of the radar waveforms, which may be significant in distributed MIMO radar. As the sensors are spatially distributed, the waveforms undergo different propagation delays and Doppler frequencies and thus may lose mutual orthogonality. The problem becomes more severe in the presence of synchronization errors. In this paper, we propose an improved coherent detector (CD) that takes into account the cross correlation in phase compensation and exploits different signal strength among different transmit-receive (TX-RX) paths. We also propose a new hybrid detector (HD) as a trade-off solution, in terms of detection performance and synchronization requirement, to bridge coherent detection and non-coherent detection. Numerical results are presented to illustrate the performance of existing and proposed detectors with or without synchronization errors.
KW - Distributed MIMO radar
KW - asynchronous propagation
KW - non-orthogonal waveforms
KW - target detection
KW - timing, frequency, and phase errors
UR - http://www.scopus.com/inward/record.url?scp=85112470223&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85112470223&partnerID=8YFLogxK
U2 - 10.1109/RadarConf2147009.2021.9455305
DO - 10.1109/RadarConf2147009.2021.9455305
M3 - Conference contribution
AN - SCOPUS:85112470223
T3 - IEEE National Radar Conference - Proceedings
BT - 2021 IEEE Radar Conference
T2 - 2021 IEEE Radar Conference, RadarConf 2021
Y2 - 8 May 2021 through 14 May 2021
ER -