The speckle reduces detectability of image features. It is essential to remove speckle for proper identification of features and image analysis. Any feature in ribbon like shape like roads runways or edge features require speckle removal for analysis. The effect of speckle can be reduced in two methods. https://www.theijire.com/archives/paper-details?paperid=45&papertitle=algorithm-for-speckle-lessening-and-image-improvement-in-sar-images-using-wavelet-transforms