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.
Original language | English |
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Pages (from-to) | 104-110 |
Number of pages | 7 |
Journal | Journal of Electromagnetic Engineering and Science |
Volume | 21 |
Issue number | 2 |
DOIs | |
State | Published - 1 Apr 2021 |
Externally published | Yes |
Keywords
- Backscattering Coefficient
- Leaf Curvature
- Multiple Scattering
- Radiative Transfer Model
- Surface Roughness
ASJC Scopus subject areas
- Radiation
- Instrumentation
- Computer Networks and Communications
- Electrical and Electronic Engineering