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http://dx.doi.org/10.5515/KJKIEES.2012.23.10.1196

Verification of a Calibration Technique for a Full-Polarimetric Scatterometer System at C-band  

Park, Sin-Myeong (Department of Electronic Information and Communication Engineering, Hongik University)
Go, Joo-Seoc (Department of Electronic Information and Communication Engineering, Hongik University)
Joo, Jeong-Myeong (Department of Electronic Information and Communication Engineering, Hongik University)
Kim, Hee-Young (Department of Electronic Information and Communication Engineering, Hongik University)
Kim, Ju-Hui (Department of Electronic Information and Communication Engineering, Hongik University)
Hwang, Ji-Hwan (Department of Electronic Information and Communication Engineering, Hongik University)
Kwon, Soon-Gu (Department of Electronic Information and Communication Engineering, Hongik University)
Shin, Jong-Chul (Department of Electronic Information and Communication Engineering, Hongik University)
Oh, Yisok (Department of Electronic Information and Communication Engineering, Hongik University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.10, 2012 , pp. 1196-1203 More about this Journal
Abstract
This paper presents a study on the calibration of a C-band HPS(Hongik Polarimetric Scatterometer) system using the DMMCT(Differential Mueller Matrix Calibration Technique). For calibration of the polarimetric scatterometer system, a fully-polarimetric antenna pattern(magnitudes and phase-differences) of the antenna main-beam is measured using a conducting sphere at anechoic chamber. The polarimetric scatterometer system could be accurately calibrated after retrieving its distortions using the DMMCT. Unlike a single-polarimetric system, in a fully-polarimetric system, not only backscattering coefficients but also phase differences are important parameters. This calibrated HPS system can be used to measure accurate Mueller matrices of bare soil surfaces, rice paddies, and vegetation fields. The phase-difference parameters as well as the backscattering coefficients for co- and cross-polarizations can then be obtained. The accuracy of calibration was verified by comparing the measured backscattering coefficients with a scattering model. The measured polarization response of a plowed bare field was also compared with the polarization response which was synthesized using a polarimetric scattering model for verifying the calibration technique.
Keywords
Polarimetric Scatterometer; Differential Mueller Matrix; Calibration Technique; Backscattering Coefficient; Phase-Difference; Polarization Response;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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