The Radar SAR and Landsat TM images are selected as the experimental datum,after converting the DN value to backscatter coefficient and reflectance respectively,the improved SVR method is used to fuse the data.To compare with fusion result,the HIS,brovey and wavelet method are used in this article.Finally,the optimized back propagation model is used to classify the TM and the fusion images with the same training areas.The experiment results are analyzed in spectrum maintenance or in quantity and the accurac...