TY - GEN
T1 - Natural disaster damage evaluation using fully polarimetric techniques with spaceborne SAR data
AU - Chen, Si Wei
AU - Li, Yong Zhen
AU - Wang, Xue Song
AU - Sato, Motoyuki
PY - 2014/10/17
Y1 - 2014/10/17
N2 - This paper focuses on earthquake/tsunami damage investigation over urban areas by exploring the multi-temporal spaceborne ALOS/PALSAR PolSAR data. The polarimetric scattering mechanism changes before- and after-tsunami, at the city block scale, have been examined using model-based decomposition and PO angle techniques. These analyzes are used to establish the relationships between the polarimetric scattering mechanism changes and damage levels. The basic scattering structures such as ground-wall dihedral structures from the built-up areas were found to be stable even over a long temporal baseline. Two polarimetric indexes have been proposed for damage level indication. Experimental results validate the efficiency of these two indicators, since the built-up areas with different damage levels can be well discriminated. These results demonstrate the importance and efficiency of full polarimetric information for natural disaster assessment.
AB - This paper focuses on earthquake/tsunami damage investigation over urban areas by exploring the multi-temporal spaceborne ALOS/PALSAR PolSAR data. The polarimetric scattering mechanism changes before- and after-tsunami, at the city block scale, have been examined using model-based decomposition and PO angle techniques. These analyzes are used to establish the relationships between the polarimetric scattering mechanism changes and damage levels. The basic scattering structures such as ground-wall dihedral structures from the built-up areas were found to be stable even over a long temporal baseline. Two polarimetric indexes have been proposed for damage level indication. Experimental results validate the efficiency of these two indicators, since the built-up areas with different damage levels can be well discriminated. These results demonstrate the importance and efficiency of full polarimetric information for natural disaster assessment.
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U2 - 10.1109/URSIGASS.2014.6929610
DO - 10.1109/URSIGASS.2014.6929610
M3 - Conference contribution
AN - SCOPUS:84919723422
T3 - 2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014
BT - 2014 31th URSI General Assembly and Scientific Symposium, URSI GASS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 31st General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2014
Y2 - 16 August 2014 through 23 August 2014
ER -