Abstract

The high resolution in synthetic aperture radar (SAR) systems is reduced by the speckle appearing in SAR images. This speckle noise is generated by the coherent processing of radar signals and is similar to optical speckle. This multiplicative noise in radar images may be reduced by computer spatial processing: noise smoothing algorithms are developed based on local homomorphic processing of the images. The algorithms applied to the SAR images suppress the speckle noise without deterioration of the edges and fine details.

© 1987 Optical Society of America