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Evaluation of modified four-component scattering power decomposition method over highly rugged glaciated terrain
Evaluation of modified four-component scattering power decomposition method over highly rugged glaciated terrain
Singh, Gulab
山口, 芳雄
Park, Sang-Eun
Avtar, Ram
© 2012 Taylor & Francis
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Geocarto International on 20/10/2011, available online: http://www.tandfonline.com/10.1080/10106049.2011.626082
four-component scattering power decomposition
PALSAR
Himalaya
glaciated terrain
In recent years, there has been increased utilization of fully polarimetric synthetic aperture radar (POLSAR) data to study glaciated terrain features for glaciological and climate change modelling. This article is concerned with more accurate results and appropriate analysis of POLSAR data over a highly rugged glaciated area in Himalayan region. For this purpose, the modified Yamaguchi four-component scattering power decomposition (4-CSPD) method with a rotation concept of 3 × 3 coherency matrix [T] about line of sight is evaluated. It has been found that the modified Yamaguchi 4-CSPD method significantly improved the decomposition results as compared with the original 4-CSPD by minimizing the cross-polarized Horizontal-Vertical (HV) components. This modified 4-CSPD leads to enhancement in the double bounce scattering and surface scattering components and also avoids the overestimation problem in the volume scattering component as compared with the original 4-CSPD from the sloped terrain. The significant reductions of the negative power occurrence in the surface scattering (3.9%) and the double bounce scattering (19.7%) components have also been noticed as compared with the original 4-CSPD method over the glaciated area in this part of the Indian Himalaya.
Taylor & Francis
2012
eng
journal article
http://hdl.handle.net/10191/30087
https://niigata-u.repo.nii.ac.jp/records/1683
info:doi/10.1080/10106049.2011.626082
AA10729367
10106049
Geocarto International
Geocarto International
27
2
139
151
https://niigata-u.repo.nii.ac.jp/record/1683/files/GI_26(2)_139-151.pdf
application/pdf
2.3 MB
2019-07-29