一种曲线轨迹下的大场景前斜视成像算法
doi: 10.3724/SP.J.1146.2010.00575
Missile-borne Large Region Squint SAR Algorithm Based on a Curve Trajectory
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摘要: 该文提出一种曲线轨迹下获取前向目标图像的新算法。考虑到曲线轨迹下严重的距离耦合，算法首先通过时域距离走动校正有效减少了距离耦合，然后采用级数反演法获得2维频率域表达式，求取ECS算法的相关系数，利用ECS获得了精确的成像结果。文章最后通过仿真实验验证了算法的有效性。Abstract: An advanced algorithm is proposed to obtain forward-target image on a curve trajectory, which causes a serious range coupling. The algorithm decreases efficiently the coupling with Range Walk Correction (RCM) in time domain firstly. The 2-dimision frequency domain expression is presented with series reversion. The correlative coefficient of ECS algorithm is obtained, and SAR image is got with ECS. Finally simulations show the validity of the proposed algorithm.
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