Detection performance of distributed MIMO radar with asynchronous propagation and timing/phase errors

Fangzhou Wang, Cengcang Zeng, Hongbin Li, Mark A. Govoni

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publication2020 IEEE International Radar Conference, RADAR 2020
Pages13-18
Number of pages6
ISBN (Electronic)9781728168128
DOIs
StatePublished - Apr 2020
Event2020 IEEE International Radar Conference, RADAR 2020 - Washington, United States
Duration: 28 Apr 202030 Apr 2020

Publication series

Name2020 IEEE International Radar Conference, RADAR 2020

Conference

Conference2020 IEEE International Radar Conference, RADAR 2020
Country/TerritoryUnited States
CityWashington
Period28/04/2030/04/20

Keywords

  • Asynchronous propagation
  • Coherent
  • Distributed MIMO radar
  • Non-coherent detection
  • Sync errors

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