合成孔径雷达杂波回波图像，G0分布的PDF函数绘制，是G0分布族的一种，稍加改动可以用绘制其他分布类型的PDF曲线(Synthetic aperture radar clutter echo images, G0 distribution of the PDF function rendering, is a G0 distribution family, a little change, you can draw other distribution types of PDF curves)