中文说明：
对旧金山海岸的极化SAR数据进行分类。根据图像像素点的散射特性采用Freeman分解对图像进行分类，利用wishart聚类算法聚类，最后得到极化sar数据的分类结果。保证了图像的极化特性和散射特性。
English Description：
The polarimetric SAR data of San Francisco coast are classified. According to the scattering characteristics of image pixels, Freeman decomposition is used to classify the images, and Wishart clustering algorithm is used to cluster the images. Finally, the classification results of polarimetric SAR data are obtained. The polarization and scattering characteristics of the image are guaranteed.