An Improved Radiative Transfer Model for Polarimetric Backscattering from Agricultural Fields at C- and X-Bands
- Authors
- Oh, Yisok; Chang, Jisung Geba; Shoshany, Maxim
- Issue Date
- Apr-2021
- Publisher
- KOREAN INST ELECTROMAGNETIC ENGINEERING & SCIENCE
- Keywords
- Backscattering Coefficient; Leaf Curvature; Multiple Scattering; Radiative Transfer Model; Surface Roughness
- Citation
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, v.21, no.2, pp.104 - 110
- Journal Title
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE
- Volume
- 21
- Number
- 2
- Start Page
- 104
- End Page
- 110
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/15554
- DOI
- 10.26866/jees.2021.21.2.104
- ISSN
- 2671-7255
- Abstract
- The first-order vector radiative transfer model (FVRTM) is modified mainly by examining the effects of leaf curvature of vegetation canopies, the higher-order multiple scattering among vegetation scattering particles, and the underlying-surface roughness for forward reflection on radar backscattering from farming fields at C- and X-bands. At first, we collected the backscattering coefficients measured by scatterometers and space-borne synthetic aperture radar (SAR), field-measured ground-truth data sets, and theoretical scattering models for radar backscattering from vegetation fields at microwaves. Then, these effects on the RTM were examined using the database at the C- and X-bands. Finally, an improved RTM was obtained by adjusting its parameters, mainly related with the leaf curvature, the higherorder multiple scattering, and the underlying-surface small-roughness characteristics, and its accuracy was verified by comparisons between the improved RTM and measurement data sets.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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