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Open AccessLetter

Seven-Component Model-Based Decomposition for PolSAR Data with Sophisticated Scattering Models

1
State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology, Changsha 410073, Hunan, China
2
College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2019, 11(23), 2802; https://doi.org/10.3390/rs11232802
Received: 25 September 2019 / Revised: 23 November 2019 / Accepted: 26 November 2019 / Published: 27 November 2019
(This article belongs to the Section Urban Remote Sensing)
Due to incomprehensive and inaccurate scattering modeling, the state-of-the-art polarimetric synthetic aperture radar (PolSAR) model-based target decompositions are incapable of effectively depicting the scattering mechanism of obliquely oriented urban areas. In this paper, a seven-component model-based decomposition scheme is proposed by constructing several sophisticated scattering models. First, an eigenvalue-based obliquely-oriented dihedral scattering model is presented to reasonably distribute the co-polarization and cross-polarization scattering powers in obliquely oriented urban areas, thus accurately characterizing the urban scattering. Second, the ±45° oriented dipole and ±45° quarter-wave reflector scattering models are incorporated for the purpose of accounting for the real and imaginary components of the T 13 element in the coherency matrix so as to fully utilize polarimetric information. Finally, according to their mathematical forms, several strategies for model parameter solutions are designed, and the seven-component decomposition is fulfilled. Experimental results conducted on different PolSAR data demonstrate that the proposed method considerably improves the PolSAR scattering interpretation in a more physical manner compared to other existing model-based decomposition, which can be applied for urban area detection, classification, and other urban planning applications. View Full-Text
Keywords: polarimetric synthetic aperture radar (PolSAR); seven-component model-based decomposition; obliquely oriented dihedral scattering model; ±45° oriented dipole scattering model; ±45° oriented quarter-wave reflector scattering model polarimetric synthetic aperture radar (PolSAR); seven-component model-based decomposition; obliquely oriented dihedral scattering model; ±45° oriented dipole scattering model; ±45° oriented quarter-wave reflector scattering model
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MDPI and ACS Style

Fan, H.; Quan, S.; Dai, D.; Wang, X.; Xiao, S. Seven-Component Model-Based Decomposition for PolSAR Data with Sophisticated Scattering Models. Remote Sens. 2019, 11, 2802.

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