An Improved Radiative Transfer Model for Polarimetric Backscattering from Agricultural Fields at C- and X-Bands

Yisok Oh, Jisung Geba Chang, Maxim Shoshany

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
Pages (from-to)104-110
Number of pages7
JournalJournal of Electromagnetic Engineering and Science
Volume21
Issue number2
DOIs
StatePublished - 1 Apr 2021
Externally publishedYes

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

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