ESTAR and model brightness temperatures over forests: effects of soil moisture

Author

Lang, Roger H. ; Utku, Cuneyt ; de Matthaeis, Paolo

Author_Institution

Dept. of Electr. & Comput. Eng., George Washington Univ., DC

Volume

3

fYear

2001

fDate

2001

Firstpage

1300

Abstract

Airborne measurements of brightness temperature at L-band over conifer stands located in Southern Virginia were made in July, August and November of 1999. Ground truth data related to forest stands and ground were also collected. The conifer stands were modeled by the distorted Born approximation (DBA) in conjunction with Peak´s principle. The ground was modeled as a half space with surface roughness. The soil permittivity was related to its volumetric moisture through Dobson´s model. It was observed that with sufficiently accurate measurement of ground temperature it is possible to see through the forest and retrieve information about the moisture of the underlying soil

Keywords

hydrological techniques; radiometry; remote sensing; soil; terrain mapping; AD 1999; Dobson´s model; ESTAR; L-band; Peak´s principle; UHF; USA; United States; Virginia; brightness temperature; conifer; distorted Born approximation; forest; hydrology; measurement technique; microwave radiometry; model; remote sensing; soil moisture; soil permittivity; vegetation mapping; Approximation methods; Brightness temperature; Distortion measurement; L-band; Moisture; Rough surfaces; Scattering; Soil; Surface roughness; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-7031-7

Type

conf

DOI

10.1109/IGARSS.2001.976825

Filename

976825