TY - GEN
T1 - Detection performance of distributed MIMO radar with asynchronous propagation and timing/phase errors
AU - Wang, Fangzhou
AU - Zeng, Cengcang
AU - Li, Hongbin
AU - Govoni, Mark A.
N1 - Publisher Copyright:
© 2020 IEEE
PY - 2020/4
Y1 - 2020/4
N2 - Distributed multi-input multi-output (MIMO) radar has received significant interest in recent years. However, most prior works assume orthogonal transmit waveforms, which can be perfectly separated at the receiver using a set of waveform-specific matched filters. With widely separated antennas, the waveforms often arrive at the receiver at different times, losing their orthogonality. The problem becomes worse when timing/phase errors are present. In this paper, we examine target detection in distributed MIMO radar with synchronization errors. A general signal model is developed that takes into account asynchronous propagation and possible timing/phase synchronization errors in distributed MIMO radar. Two sets of linear frequency modulation (LFM) based waveforms with different characteristics, along with coherent and non-coherent detectors, are employed to examine the impact of asynchronous propagation and synchronization errors on target detection. Simulation results are provided to compare the target detection performance of these detectors under different scenarios. Our results show that while the coherent detector is in general sensitive to synchronization errors, the non-coherent detector may benefit from the cross interference among the transmit waveforms, which makes it less sensitive to synchronization errors, in particular for highly correlated waveforms.
AB - Distributed multi-input multi-output (MIMO) radar has received significant interest in recent years. However, most prior works assume orthogonal transmit waveforms, which can be perfectly separated at the receiver using a set of waveform-specific matched filters. With widely separated antennas, the waveforms often arrive at the receiver at different times, losing their orthogonality. The problem becomes worse when timing/phase errors are present. In this paper, we examine target detection in distributed MIMO radar with synchronization errors. A general signal model is developed that takes into account asynchronous propagation and possible timing/phase synchronization errors in distributed MIMO radar. Two sets of linear frequency modulation (LFM) based waveforms with different characteristics, along with coherent and non-coherent detectors, are employed to examine the impact of asynchronous propagation and synchronization errors on target detection. Simulation results are provided to compare the target detection performance of these detectors under different scenarios. Our results show that while the coherent detector is in general sensitive to synchronization errors, the non-coherent detector may benefit from the cross interference among the transmit waveforms, which makes it less sensitive to synchronization errors, in particular for highly correlated waveforms.
KW - Asynchronous propagation
KW - Coherent
KW - Distributed MIMO radar
KW - Non-coherent detection
KW - Sync errors
UR - http://www.scopus.com/inward/record.url?scp=85090353625&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85090353625&partnerID=8YFLogxK
U2 - 10.1109/RADAR42522.2020.9114586
DO - 10.1109/RADAR42522.2020.9114586
M3 - Conference contribution
AN - SCOPUS:85090353625
T3 - 2020 IEEE International Radar Conference, RADAR 2020
SP - 13
EP - 18
BT - 2020 IEEE International Radar Conference, RADAR 2020
T2 - 2020 IEEE International Radar Conference, RADAR 2020
Y2 - 28 April 2020 through 30 April 2020
ER -