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›› 2014, Vol. 31 ›› Issue (4): 537-542.DOI: 10.7523/j.issn.2095-6134.2014.04.014

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Three-component decomposition for compact polarimetric interferometric SAR

CHEN Lin1,2, LI Yang1,2, GUO Shenglong1,2, HONG Wen1   

  1. 1. National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-04-27 Revised:2013-05-30 Online:2014-07-15

Abstract:

This paper presents a target decomposition algorithm for compact polarimtric interferometric SAR(C-PolInSAR) data. The method for fully polarimetric interferometric SAR (F-PolInSAR) data is used in treatment of C-PolInSAR, and it decomposes the cross-variance matrix into three components. Due to data reduction, the equations are undetermined. The power of volume scattering is estimated by using the polarization degree, and the phase of double-bounce scattering is derived by searching the longest axis in coherence region and deciding the true ground phase. Then the equations are solved to obtain the power and phase center distribution of each scattering component. C-PolInSAR data is synthesized from simulated L-band F-PolInSAR data to support the algorithm.

Key words: compact polarimetric interferometric SAR, target decomposition, polarization degree, coherence region

CLC Number: