SPGA algorithm compensates the envelope and phase of the echo signal which has not be corrected range migration.
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。
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The simulation results using SPGA algorithm show that SPGA algorithm estimates the sway effectively and the image quality is improved without along track shift, so the targets are oriented exactly.