Location and imaging of moving targets using nonuniform linear antenna array SAR
Location and imaging of moving targets using nonuniform linear antenna array SAR
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DOI：
10.1109/taes.2007.4383613
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发表时间：
2007-07-01
影响因子：
4.4
通讯作者：
Xia, Xiang-Gen
中科院分区：
文献类型：
--
作者：
Li, Gang;Xu, Jia;Xia, Xiang-Gen
速度合成孔径雷达（VSAR）采用线性天线阵列，可以很好地检测、聚焦和定位慢速运动目标。然而，它可能在方位角（交叉距离）方向上错误定位快速移动目标。本文提出了一种非均匀线性天线阵列的合成孔径雷达（SAR），并给出了天线布置的设计。结果表明，本文提出的非均匀线性天线阵SAR （NULA-SAR）既能准确定位慢速运动目标，也能准确定位快速运动目标。提出了一种用于运动目标成像的综合NULA-SAR算法，并通过仿真验证了算法的有效性。
By using a linear antenna array, velocity synthetic aperture radar (VSAR) can detect, focus, and locate slowly moving targets well. However, it may mis-locate fast moving targets in the azimuth (cross-range) direction. In this correspondence, we propose a synthetic aperture radar (SAR) with a nonuniform linear antenna array and give a design of the antenna arrangement. It is shown that our proposed nonuniform linear antenna array SAR (NULA-SAR) can locate both slowly and fast moving targets correctly. An integrated NULA-SAR algorithm for moving target imaging is also presented, and it is verified by some simulations.