Polarimetric Scattering Analysis for a Finite Dihedral Corner Reflector

• HAYASHI Kei

  Graduate School of Science and Technology, Niigata University

• SATO Ryoichi

  Faculty of Education and Human Sciences, Niigata University

• YAMAGUCHI Yoshio

  Department of Information Engineering, Niigata University

• YAMADA Hiroyoshi

  Department of Information Engineering, Niigata University

Abstract

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.

Journal

• IEICE transactions on communications

  IEICE transactions on communications 89 (1), 191-195, 2006-01-01

  The Institute of Electronics, Information and Communication Engineers

Keywords

• finite dihedral corner reflector
• double-bounce scattering
• radar polarimetry
• POLSAR

Details

• CRID: 1571980077385690368
• NII Article ID: 110003488270
• NII Book ID: AA10826261
• ISSN: 09168516
• Web Site: http://hdl.handle.net/10191/21327
• Web Site: https://niigata-u.repo.nii.ac.jp/records/1806
• Text Lang: en
• Data Source:
  • CiNii Articles