一种匹配滤波结合ChirpScalingSAR数字成像处理方法

A Matched Filtering with Chirp Scaling SAR Processing Algorithm

合成孔径雷达（ＳＡＲ）是一种重要的微波遥感工具。其关键技术是成像处理，即把接收到的雷达信号转换成雷达图像。事实上，合成孔径就是通过成像处理来实现的。该文在总结目前星载ＳＡＲ各种成像处理算法的基础上，提出一种匹配滤波与ＣｈｉｒｐＳｃａｌｉｎｇ相结合的处理方法。处理过程无需插值便可进行距离迁移校正，还可获得好的聚焦与相位保持性能。所得图像质量超过现有的其它ＳＡＲ成像处理方法所得图像质量。

Synthetic aperture radar (SAR) is an important tool in microwave remote sensing. Among SAR techniques, SAR processing, which processes the received signal into SAR images, is the key point In fact. synthetic aperture is realized by SAR processing. Different algorithms for SAR processing are described and a matched filtering with Chirp Scaling algorithm is presented. It removes the interpolation step for range cell migration correction (RCMC) and accomplishes better phase preserving and focusing. The images processed are superior to those obtained by other SAR algorithms.