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タイトル :General Four-Component Scattering Power Decomposition with Unitary Transformation of Coherency Matrix
著者 :Singh, Gulab
Yamaguchi, Yoshio
Park, Sang-Eun
公開者・出版者 :IEEE
刊行年月 :2013-5
掲載誌名 :IEEE transactions on geoscience and remote sensing
巻 :51
号 :5
開始ページ :3014
終了ページ :3022
ISSN :01962892
抄録 :This paper presents a new general four-component scattering power decomposition method by implementing a set of unitary transformations for the polarimetric coherency matrix. There exist 9 real independent observation parameters in the 3 x 3 coherency matrix with respect to the second order statistics of polarimetric information. The proposed method accounts for all observation parameters in the new scheme. It is known that the existing four-component decomposition method reduces the number of observation parameters from 9 to 8 by rotation of the coherency matrix, and that it accounts for 6 parameters out of 8, leaving 2 parameters (i.e., real and imaginary part of T13 component) un-accounted for. By additional special unitary transformation to this rotated coherency matrix, it became possible to reduce the number of independent parameters from 8 to 7. After the unitary transformation, the new four-component decomposition is carried out that accounts for all parameters in the coherency matrix including the remaining T13 component. Therefore, the proposed method makes use of full utilization of polarimetric information in the decomposition. The decomposition also employs an extended volume scattering model, which discriminates the volume scattering between dipole and dihedral scattering structures caused by the cross-polarized HV component. It is found that the new method enhances the double bounce scattering contributions over the urban areas compared to those of the existing four-component decomposition, resulting from the full utilization of polarimetric information.
キーワード :Radar polarimetry
scattering power decomposition
polarimetric synthetic aperture radar
資料種別 :学術雑誌論文
言語 :eng
フォーマット :application/pdf
URI :http://hdl.handle.net/10191/19402
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/19402/1/IEEETGRS_99_1-9.pdf
DOI :info:doi/10.1109/TGRS.2012.2212446
権利 :© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
出現コレクション:10 査読済論文 = Postprint

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