Detection and imaging of moving targets in wide band SAS using fast time backprojection combined with space time processing
Detection and imaging of moving targets in wide band SAS using fast time backprojection combined with space time processing
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DOI：
10.1109/oceans.2005.1640123
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发表时间：
2005-09
期刊：
影响因子：
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通讯作者：
Mats I. Pettersson;V. Zetterberg;Ingvar Claesson
中科院分区：
文献类型：
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作者：
Mats I. Pettersson;V. Zetterberg;Ingvar Claesson
本文提出了一种将静止目标的SAS（合成孔径声纳）成像与运动目标检测和成像相结合的方法。所提出的方法使用似然比来检测宽带 (WB) SAS 系统中的移动目标。在本文中，WB 被定义为任何具有大分数带宽的系统，即超宽频带与宽天线波束相结合。所开发的方法将时域快速反投影 SAS 处理方法与使用时空处理的运动目标检测相结合。本文研究了散焦和运动目标检测。运动目标的轨迹和位置均由数学表达式给出。
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.