Performance Evaluation in Subaperture Measurement of Synthetic Aperture Radar
ZHU Bo
LIU Tao
Abstract：Multilook processing is a basic method for speckle reduction of Synthetic aperture radar(SAR) images .The commonly subband extraction strategy are frequency subband extraction and spatial domain average processing .In the first method ,the frequency domain is divided into multiple subbands .Each subband is used to generate a look ,and all the looks are averaged incoherently to obtain the final image .The evaluation index ,such as ENL(Equivalent Number of Looks) ,are used to compare the image correlation and smooth degree of two methods and put forward an optimization algorithm of the bandwidth splitting in the subband extraction is introduced in this paper .Experiments show that the subaperture overlap method has a better performance in speckle reduction compared with the traditional multilook processing .
Keywords：SARmultilook processingsubband overlapspatial domain average
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 46-49,153 )