SAR imaging of moving targets
SAR imaging of moving targets
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DOI：
10.1109/7.745691
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发表时间：
1999-01-01
影响因子：
4.4
通讯作者：
Fante, RL
中科院分区：
文献类型：
--
作者：
Perry, RP;DiPietro, RC;Fante, RL
提出了一种合成孔径雷达(SAR)运动目标成像的方法，该方法不需要对目标运动有任何特定的了解。新方法使用了一种独特的处理核，它涉及去峰相位历史的一维内插，我们称之为Keystone格式化。这种预处理同时消除了对所有运动目标的线性距离偏移的影响，而不考虑它们的未知速度。运动目标成像技术的第二步涉及运动器的二维聚焦，以消除剩余的二次距离偏移误差。第三步也是最后一步是删除三次项和更高阶离焦项。这种成像技术是使用作为DARPA运动目标开发(MTE)计划的一部分收集的SAR数据来演示的。
A method of forming synthetic aperture radar (SAR) images of moving targets without using any specific knowledge of the target,motion is presented. The new method uses a unique processing kernel that involves a one-dimensional interpolation of the deramped phase history which we call keystone formatting. This preprocessing simultaneously eliminates the effects of linear range migration for all moving targets regardless of their unknown velocity. Step two of the moving target imaging technique involves a two-dimensional focusing of the movers to remove residual quadratic range migration errors. The third and last step removes cubic and higher order defocusing terms. This imaging technique is demonstrated using SAR data collected as part of DARPA's Moving Target Exploitation (MTE) program.