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 |
