New Coherent and Hybrid Detectors for Distributed MIMO Radar with Synchronization Errors

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

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

7 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publication2021 IEEE Radar Conference
Subtitle of host publicationRadar on the Move, RadarConf 2021
ISBN (Electronic)9781728176093
DOIs
StatePublished - 7 May 2021
Event2021 IEEE Radar Conference, RadarConf 2021 - Atlanta, United States
Duration: 8 May 202114 May 2021

Publication series

NameIEEE National Radar Conference - Proceedings
Volume2021-May
ISSN (Print)1097-5659

Conference

Conference2021 IEEE Radar Conference, RadarConf 2021
Country/TerritoryUnited States
CityAtlanta
Period8/05/2114/05/21

Keywords

  • Distributed MIMO radar
  • asynchronous propagation
  • non-orthogonal waveforms
  • target detection
  • timing, frequency, and phase errors

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