Microwave polarization index for monitoring vegetation growth

Author

Paloscia, Simonetta ; Pampaloni, Paolo

Author_Institution

CNR-IROE, Florence, Italy

Volume

26

Issue

5

fYear

1988

fDate

9/1/1988 12:00:00 AM

Firstpage

617

Lastpage

621

Abstract

It is known that microwave emission for soil is partially polarized, whereas the polarization degree of radiation from crops is either very small or equal to zero. The effect of vegetation on the polarized emission from the soil is analyzed by means of a model based on the radiative transfer theory. A comparison between the values predicted by the model and the experimental data obtained at 10 and 36 GHz shows that the model is particularly adequate for corn at 10 GHz, in which case different values of leaf area index can be estimated. At 36 GHz, the polarization degree changes very rapidly as vegetation grows and it is possible to distinguish only bare soil from vegetated soil

Keywords

agriculture; remote sensing; 10 GHz; 36 GHz; EHF; SHF; agriculture; crops; leaf area index; microwave emission; microwave polarization index; model; radiative transfer theory; soil; vegetation growth; Crops; Frequency estimation; Monitoring; Optical polarization; Phase measurement; Polarization; Predictive models; Rough surfaces; Soil; Soil measurements; Surface roughness; Vegetation;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.7687

Filename

7687