Mid-infrared backscatter characteristics of various benchmark soils

Author

Narayanan, Ram M. ; Green, Steven E. ; Alexander, Dennis R.

Author_Institution

Nebraska Univ., Lincoln, NE, USA

Volume

30

Issue

3

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

516

Lastpage

530

Abstract

Active mid-infrared laser reflectance characteristics of 18 different benchmark soil samples were measured at different angles of incidence at 9.283, 9.569, 10.247, and 10.633 μm wavelengths under both copolarized and cross-copolarized conditions. Calibration was performed for each measurement using a Labsphere Infra-fold Diffuse Reflectance Standard of 94% reflectance. One hundred independent samples were averaged for each measurement to yield a mean reflectance value. The soil samples were characterized in terms of the soil taxonomy, mineralogy, geographic location, soil texture, and organic content and represented wide variability in soil properties. The data thus obtained are presented in graphical form, and the effect of soil mineralogy on the spectral features is investigated. A physically based empirical model is also presented to predict the angular dependence of copolarized backscatter

Keywords

geology; geophysical techniques; remote sensing by laser beam; soil; 9 to 10.7 micron; Labsphere Infra-fold Diffuse Reflectance Standard; angles of incidence; angular dependence; benchmark soil; copolarized; cross-copolarized; geographic location; geology; laser reflectance; measurement; mid infrared backscatter; mineralogy; organic content; reflectance value; remote sensing; technique; texture; Backscatter; Calibration; Goniometers; Measurement standards; Performance evaluation; Reflectivity; Soil measurements; Soil texture; Taxonomy; Wavelength measurement;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.142930

Filename

142930