Doppler Keystone Transform: An Approach Suitable for Parallel Implementation of SAR Moving Target Imaging
Doppler Keystone Transform: An Approach Suitable for Parallel Implementation of SAR Moving Target Imaging
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DOI：
10.1109/lgrs.2008.2000621
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发表时间：
2008-10-01
影响因子：
4.8
通讯作者：
Peng, Ying-Ning
中科院分区：
文献类型：
--
作者：
Li, Gang;Xia, Xiang-Gen;Peng, Ying-Ning
本文提出了一种基于多普勒梯形变换（DKT）的合成孔径雷达（SAR）数据重格式化方法，用于校正运动目标的距离徙动。通过使用DKT，SAR成像程序，即，二维匹配滤波可转化为沿沿着距离或方位方向的一维运算，适合于运动目标SAR成像的并行实现。仿真结果表明，DKT和多普勒相位补偿相结合的方法，可以很好地成像运动目标在高信杂比的情况下。
In this letter, a synthetic aperture radar (SAR) data reformatting approach named Doppler Keystone transform (DKT) is proposed to correct the range migration of a moving target. By using the DKT, the SAR imaging program, i.e., the 2-D matched filtering, can be transformed into separate 1-D operations along range or azimuth direction, and therefore, the DKT is suitable for the parallel implementation of SAR imaging of the moving target. Our simulations show that by combining the DKT and the Doppler phase compensation methods, the moving target can be well imaged in high signal-clutter-ratio case.