一篇详细介绍驻定相位原理和方法的文章，首先介绍了驻定相位原理的定义和方法，然后对SAR成像处理中需要使用的线性调频信号进行快时间的FFT-A detailed article in the principles and methods of the given phase, first introduced in principle given phase definitions and methods, and then SAR imaging process chirp signal you