2024-03-28T10:33:05Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001806
2022-12-15T03:34:42Z
423:424:425
453:454
Polarimetric Scattering Analysis for a Finite Dihedral Corner Reflector(Sensing)
Hayashi, Kei
Sato, Ryoichi
Yamaguchi, Yoshio
Yamada, Hiroyoshi
copyright(C)2006 IEICE
finite dihedral corner reflector
double-bounce scattering
radar polarimetry
POLSAR
This paper examines polarimetric scattering characteristics caused by a dihedral corner reflector of finite size. The dihedral corner reflector is a basic model of double-bounce structure in urban area. The detailed scattering information serves the interpretation of Polarimetric Synthetic Aperture Radar (POLSAR) data analysis. The Finite-Difference Time-Domain (FDTD) method is utilized for the scattering calculation because of its simplicity and flexibility in the target shape modeling. This paper points out that there exists a stable double-bounce squint angle region both for perfect electric conductor (PEC) and dielectric corner reflectors. Beyond this stable squint angular region, the scattering characteristics become completely different from the assumed response. A criterion on the double-bounce scattering is proposed based on the physical optics (PO) approximation. The detailed analyses on the polarimetric index (copolarization ratio) with respect to squint angle and an experimental result measured in an anechoic chamber are shown.
The Institute of Electronics, Information and Communication Engineers
2006-01
eng
journal article
VoR
http://hdl.handle.net/10191/21327
https://niigata-u.repo.nii.ac.jp/records/1806
http://doi.org/10.1093/ietcom/e89-b.1.191
http://www.ieice.org/jpn/trans_online/
AA10826261
0916-8516
IEICE transactions on communications
E89-B
1
191
195
https://niigata-u.repo.nii.ac.jp/record/1806/files/110003488270.pdf
application/pdf
798.9 kB
2019-07-29