Journal of University of Chinese Academy of Sciences >
Reinforcement of the complete model-based decomposition for polarimetric SAR based on canonical Huynen dichotomy
Received date: 2024-02-08
Accepted date: 2024-05-09
Online published: 2024-06-04
As an important technique for the fine interpretation of the polarimetric synthetic aperture radar targets， the model-based polarimetric decomposition is dedicated to additively expanding the complex target scatterings over the canonical models of surface scattering， double-bounce scattering， and volume scattering. However， model-based decompositions suffer from negative powers and insufficient utilization of polarimetric information. The complete model-based decomposition （CMD） and its improvement solve these problems， but cause the so-called zero-power degradation. This is because CMD can not always extract a surface component and a double-bounce component from the remaining matrix after the removal of the volume scattering， and zero scattering power is then inevitable. CMD is reinforced in this paper. We find that the extraction of the surface and double-bounce components in CMD is essentially a sub-dichotomy of the canonical Huynen dichotomy that prefers volume scattering. By adaptively upgrading it with the other two sub-dichotomies of the canonical Huynen dichotomy that prefer surface scattering and dihedral scattering， respectively， the reinforced CMD can always decompose the surface and double-bounce components without degradation，and the problem of zero power is thus effectively solved. Qualitative and quantitative comparisons on measured polarimetric SAR datasets are presented to demonstrate the good performance of the proposed method.
Jiatong LI , Dong LI , Yunhua ZHANG , Xun WANG , He LU . Reinforcement of the complete model-based decomposition for polarimetric SAR based on canonical Huynen dichotomy[J]. Journal of University of Chinese Academy of Sciences, 2026 , 43(3) : 404 -413 . DOI: 10.7523/j.ucas.2024.046
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