Polarimetric calibration for a ground-based synthetic aperture radar system

Suyun Wang, Weike Feng, Motoyuki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a polarimetric calibration procedure required to produce accurate polarimetric characteristic of the illuminating scene by GB-SAR. The correction for polarimetric distortions of the GB-SAR system employs only three types of calibration targets, i.e., trihedral, dihedral and 22.5°-rotated dihedral corner reflectors. Azimuth and frequency dependencies on polarimetric responses of a trihedral corner reflector were evaluated by numerical simulation, and we found little difference within 300 MHz bandwidth and of 2 m synthetic aperture length. The proposed polarimetric calibration method was verified by experiment. An amplitude error as low as 0.5 dB and phase error within 3° was achieved by the GB-SAR system at 17 GHz, showing excellent agreement between the theoretical and calibrated polarimetric signatures for a trihedral corner reflector. Finally, we investigate the effects of polarimetric calibration by Pauli decomposition, which indicates desirable polarimetric performance after polarimetric calibration.

Original languageEnglish
Title of host publication2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages632-639
Number of pages8
ISBN (Electronic)9781728153049
DOIs
Publication statusPublished - 2019 Dec
Event2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Xiamen, China
Duration: 2019 Dec 172019 Dec 20

Publication series

Name2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings

Conference

Conference2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019
CountryChina
CityXiamen
Period19/12/1719/12/20

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Mathematical Physics

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