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High-resolution 2-D sector-scan imaging using MIMO sonar with narrowband LFM pulses

  • Northwestern Polytechnical University Xian

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

15 Scopus citations

Abstract

For obtaining high cross-range resolution, a new sector-scan imaging approach based on a multiple-input multiple-output (MIMO) sonar is proposed in this paper. The MIMO sonar is composed of two transmitting sensors and a receiving uniform linear array (ULA), which are located on the same straight line. The spacing between two transmitting sensors is equal to the product of the sensor number and the sensor spacing of the receiving ULA. Furthermore, two narrowband linear frequency modulation (LFM) pulses, sharing the same frequency band but opposite modulation slopes, are employed as transmitting waveforms. In addition, the phase-shifting beam-forming is conducted on the outputs of matched filters. Via theoretical analysis and numerical simulation, it is shown that the MIMO sonar doubles the cross-range resolution, when compared to the traditional 2-D sector-scan sonar.

Original languageEnglish
Title of host publicationOCEANS 2013 MTS/IEEE - San Diego
Subtitle of host publicationAn Ocean in Common
PublisherIEEE Computer Society
ISBN (Print)9780933957404
DOIs
StatePublished - 2013
Event2013 MTS/IEEE San Diego Conference: An Ocean in Common, OCEANS 2013 - San Diego, CA, United States
Duration: 23 Sep 201326 Sep 2013

Publication series

NameOCEANS 2013 MTS/IEEE - San Diego: An Ocean in Common

Conference

Conference2013 MTS/IEEE San Diego Conference: An Ocean in Common, OCEANS 2013
Country/TerritoryUnited States
CitySan Diego, CA
Period23/09/1326/09/13

Keywords

  • 2-D imaging
  • High resolution
  • Multiple-input multiple-output (MIMO) sonar
  • Sector-scan imaging
  • Sector-scan sonar
  • Sonar imaging
  • Underwater acoustics

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