Of the existing phase compensation methods, the phase gradient autofocus (PGA) algorithm is a better one.

在现有的相位补偿方法中，相位梯度自聚焦（PGA）算法是较好的一种。

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PGA algorithm based on radar echo signal is one method of estimating and correcting phase error in time domain, and its algorithm is simple to use.

基于雷达回波信号的PGA算法是在时域估计和校正系统相位误差的一种方法，算法较简单。

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One of the jammer structures which can realize the algorithm is given and the method for reducing nonlinear phase errors is presented.

给出了一种实现此算法的干扰机结构，并提出了减小非线性相位误差的方法。

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