Detection and imaging of moving targets in wide band SAS using fast time backprojection combined with space time processing

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Mats Pettersson, Viktoria Zetterberg, Ingvar Claesson
Title: Detection and imaging of moving targets in wide band SAS using fast time backprojection combined with space time processing
Conference name: OCEANS 2005 MTS/IEEE
Year: 2005
Pagination: 2388-93 Vol. 3
ISBN: 0-933957-34-3
Publisher: IEEE
City: Washington
ISI number: 000238978702083
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Language: English
Abstract: This paper present a method to combine SAS (Synthetic Aperture Sonar) imaging of stationary targets with moving target detection and imaging. The proposed method uses a likelihood ratio for moving target detection in a wide band (WB) SAS system. For this paper, WB is defined as any systems having a large fractional bandwidth, i.e. an ultra wide frequency band combined with a wide antenna beam. The developed method combines time domain fast backprojection SAS processing methods with moving target detection using space-time processing. In the paper defocusing and detection of moving targets are investigated. Both the trajectory and the location of the moving target is given by mathematical expressions.
Subject: Signal Processing\Radar and Sonar
Signal Processing\Beamforming
Signal Processing\Hydro-Acoustics
Keywords: sonar detection, sonar imaging, sonar tracking, synthetic aperture sonar, target tracking
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