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§2.1概述 SAR图象信号处理的目的在于从受到噪声干扰和运动造成的几何失真干扰的雷达接收机输出信号中有效地提取原地貌特征信息,或再现本来的图象场景,雷达波束扫掠两维图象场景通过相干地处理雷达信号的相位关系而再现。如前所述雷达图象平而的两正交坐标是距离和方位,距离坐标由接收脉冲的时间延迟來确定,其高分辨力靠脉冲压缩技术来
§ 2.1 General The purpose of SAR image signal processing is to effectively extract the original landscape feature information from the radar receiver output signal that is subject to noise interference and geometric distortions caused by motion or to reproduce the original image scene. The radar beam sweep two The dimensional image scene is reproduced by coherently processing the phase relationship of the radar signal. As mentioned earlier, the two orthogonal coordinates of the radar image are distance and azimuth. The distance coordinate is determined by the time delay of receiving the pulse. Its high resolution depends on the pulse compression technique