Synthetic aperture radar (SAR) images are usually corrupted by strongly speckle noise

which blocks scene information abstracting and the application of SAR images.A combination despeckle reconstruction algorithm is proposed based on generation principles and statistic characters of speckle noise.The despeckle and reconstruction performance of this algorithm is as good as simulated annealing algorithm

but it reduces the computation cost and still has excellent despeckle and scene structure keeping performance.It is a practical algorithm for SAR image reconstruction.