A Modified Water-Cloud Model With Leaf Angle Parameters for Microwave Backscattering From Agricultural Fields
- Authors
- Kweon, Soon-Koo; Oh, Yisok
- Issue Date
- May-2015
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Backscattering coefficient; first-order radiative transfer model (RTM); ground-based scatterometer; modified water-cloud model (MWCM); synthetic aperture radar (SAR); vegetation field
- Citation
- IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, v.53, no.5, pp.2802 - 2809
- Journal Title
- IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
- Volume
- 53
- Number
- 5
- Start Page
- 2802
- End Page
- 2809
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/9941
- DOI
- 10.1109/TGRS.2014.2364914
- ISSN
- 0196-2892
- Abstract
- This paper presents the development of an accurate and simple scattering model for radar backscatters of agricultural fields. We modified the water-cloud model (WCM) by adding new parameters (the average and standard deviation of leaf angle distribution) to accurately estimate the backscattering coefficients with the angular effect of scattering particles in a vegetation canopy. A relatively accurate radiative transfer model (RTM) and field measurements were used in this modification. The accuracy of the RTM was verified with the C-band ground-based scatterometer data of a cornfield, the X-band synthetic aperture radar data and ground-based scatterometer data of a bean field, and the in situ measured ground-truth data of those fields. The newly modifiedWCM (MWCM) was also verified with the measurement data. It was found that the root-mean-square errors between the MWCM and the measurements were less than 1.5 dB for all backscatter data from the agricultural vegetation fields.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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