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A New Approach of Extended Chirp Scaling Algorithm for High Squint Missileborne SAR Data Processing

机译:一种新方法对高斜壁导弹SAR数据处理的延长啁啾缩放算法

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In the traditional Extended Chirp Scaling (ECS) algorithm, after RCMC in the range signal/Doppler domain, targets in the same range gate will have different FM rates for difference of the slant ranges. In the paper, a novel approach for high squint missile-borne SAR data processing using a modified extended chirp scaling algorithm is proposed. A nonlinear Chirp Perturbation Function (CPF) is presented and can be applied to each range gate to equalize the targets FM rates before azimuth compression, which can accommodate azimuth compression and improve precision of algorithm. Comparison between this development named modified ECS with traditional ECS algorithm is implemented and several simulations of point targets demonstrate the validity.
机译:在传统的扩展啁啾缩放(ECS)算法中,在RANGE信号/多普勒域中的RCMC之后,相同范围门中的目标将具有不同的FM速率,用于倾斜范围的差异。本文提出了一种使用改进的扩展啁啾缩放算法的高斜视导弹的SAR数据处理的新方法。呈现非线性啁啾扰动功能(CPF),并且可以应用于每个范围门,以在方位角压缩前均衡目标FM速率,这可以适应方位角压缩和提高算法精度。实现了具有传统ECS算法的该开发的该开发之间的比较是实现的,点目标的几个模拟展示了有效性。

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