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A unified framework for multiple-input multiple-output and bistatic synthetic aperture sonar processing

conference contribution
posted on 2023-05-23, 18:56 authored by Xu, W, Sun, F, Fan, S, Pan, X
Conventional monostatic synthetic aperture sonar (SAS) imaging is based on the point target assumption, and may suffer from the target scattering fluctuation within the scope of the synthesized aperture. Bistatic sonar can sample target scattering pattern (TSP) at any angle rather than from only the back scattering direction. It offers potential advantages when faced with an anisotropic target, but is still subject to limited mainlobe width of the TSP. In this paper we construct a unified framework of coherent and non-coherent processing, where the concept of multiple-input multiple-output (MIMO) and SAS are closely integrated to overcome the above-mentioned problem. Both bistatic sonar and MIMO sonar embody the concept of "Multi-", admitting the existence of spatial fading of acoustic targets and trying to make use of it. It is straightforward to migrate a conventional SAS to MIMO-SAS by putting multiple transmitters to insonify the target from different angles. An example realization of the framework using two transmitters is demonstrated.

History

Publication title

Proceedings of OCEANS '15 MTS/IEEE - Genova

Pagination

2709-2712

ISBN

978-1-4799-8736-8

Department/School

Australian Maritime College

Publisher

IEEE-Inst Electrical Electronics Engineers Inc

Place of publication

USA

Event title

OCEANS '15 MTS/IEEE - Genova

Event Venue

Genoa, Italy

Date of Event (Start Date)

2015-05-18

Date of Event (End Date)

2015-05-21

Repository Status

  • Restricted

Socio-economic Objectives

National security

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