@inproceedings{oai:niigata-u.repo.nii.ac.jp:00030941,
 author = {Sato, Ryoichi and Yajima, Yuki and Yamaguchi, Yoshio and Yamada, Hiroyoshi},
 book = {International Symposium on Antennas and Propagation, International Symposium on Antennas and Propagation},
 issue = {3B1b-1},
 month = {Nov},
 note = {This paper examines seasonal change of the water area in Lake Sakata by using Polarimetric Synthetic Aperture Radar (POLSAR) image analysis. Statistical POLSAR image analysis is carried out for both X- and L-band data, based on a threecomponent scattering power decomposition method, where the decomposed components are surface scattering, doublebounce scattering and volume scattering components. From the results of the image analysis for the L-band POLSAR data acquired by Pi-SAR system, it is found that strong doublebounce scattering can be observed at the vicinity of the boundary region between water area and the surrounding emerged-plants area in early and middle summer seasons. To verify the generating mechanism of the double-bounce scattering, the Finite-Difference Time-Domain (FDTD) polarimetric scattering analysis is also executed for a simplified boundary model, which simulates the local boundary region around the lake and consists of lots of vertical thin dielectric pillars on a perfect electric conductor (PEC) plate or on a PEC and dielectric hybrid plate. Taking into account the polarimetric feature of the double-bounce scattering obtained by both the FDTD and POLSAR image analyses, one can distinguish the water area form the bush of the emerged-plants around the lake, even when the water area are concealed by emergedplants and/or floating-leaved plants. Consequently, it is found that by using the proposed approach, one can estimate the water area seasonal change for the lake and the surrounding wetland.},
 pages = {1--5},
 publisher = {The Institute of Electronics, Information and Communication Engineers},
 title = {Seasonal Change Investigation of Water Area in Lake Sakata Based on POLSAR Image Analysis},
 volume = {2006},
 year = {2006}
}