SPGA算法利用估计得到的侧摆对距离徙动校正前的回波数据进行包络和相位补偿。
SPGA algorithm compensates the envelope and phase of the echo signal which has not be corrected range migration.
BP算法由于用时延代替了相位的概念，故与频率无关，不存在距离徙动校正的问题。
BP algorithm replaces the concept of phase with delay time, so it is irrelevant to frequency and the problem of range migration correction does not exist.
该文较为详细地分析了高分辨率机载SAR数据处理中，有关目标距离单元徙动(RCM)校正和平台运动偏差的精确补偿问题。
This paper detailedly analyzes precise Range Cell Migration (RCM) correction of the targets and motion error compensation of platform in high resolution airborne SAR data processing.
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