Microwave backscatter and attenuation dependence on leaf area index for flooded rice fields

Author

Durden, Stephen L. ; Morrissey, L.A. ; Livingston, Gerald P.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

33

Issue

3

fYear

1995

fDate

5/1/1995 12:00:00 AM

Firstpage

807

Lastpage

810

Abstract

As part of an effort to determine whether radar is suitable for wetland vegetation monitoring the authors have studied the dependence of microwave backscatter and attenuation on leaf area index (LAI) for flooded rice fields. They find that the radar return from a flooded rice field does show dependence on LAI. In particular, the C-band VV cross section per unit area decreases with increasing LAI. A simple model for scattering from rice fields is derived and fit to the observed HH and VV data. The model fit provides insight into the relation of backscatter to LAI and is also used to calculate the canopy path attenuation as a function of LAI

Keywords

agriculture; backscatter; geophysical techniques; radar applications; radar cross-sections; radar polarimetry; remote sensing by radar; 3.9 to 6.2 GHz; LAI; Oryza sativa; agriculture rice paddy; attenuation dependence; backscatter; canopy path attenuation; flooded rice field; geophysical measurement technique; grass; leaf area index; microwave SHF C-band; model; radar polarimetry; radar remote sensing; radar return; radar scattering backscatter; vegetation mapping; wetland; Area measurement; Attenuation; Backscatter; Biomass; Dielectrics; Radar imaging; Radar remote sensing; Remote sensing; Soil; Vegetation mapping;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.387599

Filename

387599