说明：  精致极化lee滤波，是在多极化合成孔径雷达图像处理中， 常常要用到的一种滤波器。它可以较好的保持每个点的特性
(Delicate polarization lee, is in the filter multi-polarization synthetic aperture radar image processing, often use a filter。It can be the better to maintain the characteristics of every point )