基于级数反演和数值计算的广义双基SAR距离徙动成像算法

李燕平; 张振华; 邢孟道; 保铮

doi:10.3724/SP.J.1146.2007.00810

基于级数反演和数值计算的广义双基SAR距离徙动成像算法

doi: 10.3724/SP.J.1146.2007.00810

基金项目:

教育部重点项目(20051009)和新世纪优秀人才支持计划项目(NCET -06-0861)资助课题

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出版历程
- 收稿日期: 2007-05-28
- 修回日期: 2007-10-22
- 刊出日期: 2008-12-19

A Novel Range Migration Algorithm for General Bistatic SAR Imaging Based on Series Reversion and Numerical Computation

摘要

摘要: 收发平台速度大小和方向均不相同的双基SAR是一种广义的双基SAR，具有广阔的应用前景。该文首先分析指出，对于基线较长的广义双基SAR，很难简单地将其通过一定补偿而等效为单基SAR处理，接着提出了一种基于级数反演和数值计算的距离徙动算法，最后采用该方法对仿真数据进行处理，得到了良好的成像结果。理论分析和仿真结果表明，该方法可有效应用于长基线、大斜视角的广义双基SAR成像。
- 双基合成孔径雷达 /
- 距离徙动算法\雷达成像\级数反演\数值计算
Abstract: The bistatic configuration, when transmitter and receiver move along nonparallel tracks with unequal velocities, is called the general bistatic Synthetic Aperture Radar (SAR). This kind of bistatic SAR system has the potential for various applications. In this paper, it is shown that, for the general bistatic SAR with a long baseline, it is hard to convert the bistatic SAR data into a monostatic one for which the monostatic processor can be employed. Then, a Range Migration Algorithm (RMA) based on series reversion and numerical computation is presented. Finally, the accuracy of the proposed approach is verified with a simulation. The analysis and the simulation result show that this algorithm can be applied to the general bistatic case with a long baseline and a high squint angle.
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