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根据传统SAR处理中的Chirp Scaling原理,采用二阶距离近似模型推导了适用于顺轨飞行模式双基地SAR的Chirp Scaling算法,解决了接收、发射分置引起的雷达响应函数从距离-方位域向二维频域变换的复杂性问题,成功实现双基地SAR成像的高精度Chirp Scaling处理,在任意双基地角下都能够很好地聚焦成像。
According to the Chirp Scaling principle in the traditional SAR processing, the second-order distance approximation model is used to derive the Chirp Scaling algorithm which is suitable for the dual-base SAR in the mid-flight mode. The method solves the problem that the radar response function caused by the receive / The complexity of two-dimensional frequency-domain transformation has led to the successful implementation of high-precision Chirp Scaling of bistatic SAR imaging with excellent focus imaging at any bistatic angle.