TY - JOUR
T1 - An Improved Radiative Transfer Model for Polarimetric Backscattering from Agricultural Fields at C- and X-Bands
AU - Oh, Yisok
AU - Chang, Jisung Geba
AU - Shoshany, Maxim
N1 - Funding Information:
The authors would like to thank J. H. Hwang of Seoul National University and S. K. Kweon and S. M. Park of LIGNex1 Co. for providing their valuable measurement data. The authors also thank the anonymous reviewers for their thoughtful comments. This work was supported by the NRF of Korea (2016R1D1A1A09918412).
Publisher Copyright:
© 2020. The Korean Institute of Electromagnetic Engineering and Science. All Rights Reserved.
PY - 2021/4/1
Y1 - 2021/4/1
N2 - 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.
AB - 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.
KW - Backscattering Coefficient
KW - Leaf Curvature
KW - Multiple Scattering
KW - Radiative Transfer Model
KW - Surface Roughness
UR - http://www.scopus.com/inward/record.url?scp=85106619367&partnerID=8YFLogxK
U2 - 10.26866/jees.2021.21.2.104
DO - 10.26866/jees.2021.21.2.104
M3 - Article
AN - SCOPUS:85106619367
SN - 2671-7255
VL - 21
SP - 104
EP - 110
JO - Journal of Electromagnetic Engineering and Science
JF - Journal of Electromagnetic Engineering and Science
IS - 2
ER -