说明：  对极化SAR图像进行改进的PWF（极化白化滤波）处理，最终可分别输出四个极化通道的图像数据。 输入输出都是雷达接收到的电场强度信息，要转化为图像还需要计算其幅度值并转换到255灰度范围内。
(Of polarization SAR images to improve the PWF [polarization whitening filter] treatment, and ultimately can be output separately polarization four-channel image data. Input and output are the radar received electric field strength information, it is necessary to translate into images is also necessary to calculate their magnitude values and converted to 255 gray-scale range.)