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›› 2012, Vol. 29 ›› Issue (5): 636-643.DOI: 10.7523/j.issn.2095-6134.2012.5.009

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Speckle filtering of polarimetric SAR interferometry data based on classification

QI Wen-Lu1,2,3, LI Yang1,2, WANG Peng1,2,3, HONG Wen1,2   

  1. 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
    2. The National Key Laboratory of Microwave Imaging Technology, Beijing 100190, China;
    3. Graduate University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2011-02-23 Revised:2011-06-14 Online:2012-09-15

Abstract: A speckle filter for polarimetric synthetic aperture radar interferometry data is proposed. By using the unsupervised classification method which combines optimal polarimetric interference coherence with Freeman-Durden decomposition and by selecting the pixels belonging to the same classification as the central pixel and having simiar interferometric phase to the center pixel, the filter can suppress speckle noise well while protect data polarization information and interference information. ESAR data are used in experiment.

Key words: synthetic aperture radar, speckle filter, optimal coherence

CLC Number: