Accession Number : AD0783429

Title :   Evaluation of Index Properties of Natural Formations by Polarimetric Studies. Phase 1. Laboratory Investigations.

Descriptive Note : Interim rept.,

Corporate Author : CALIFORNIA UNIV LOS ANGELES ATMOSPHERIC OPTICS AND RADIATION LAB

Personal Author(s) : Rao,C. R. Nagaraja

Report Date : 1974

Pagination or Media Count : 60

Abstract : The dependence of the polarization of radiation reflected by surfaces composed of naturally occurring soils on index properties such as moisture (water) content, texture and composition of the soil has been examined in detail in the laboratory in slected spectral intervals over the visible and near infrared regions of the spectrum. It is found the polarization of the reflected radiation increases with increasing surface roughness and moisture content. The reflection is generally governed by the Umow law which establishes the reciprocal relationship between surface brightness and the polarization of reflected radiation. These findings will be the basis for a series of field experiments designed to evaluate the feasibility of detection and estimation of changes in the index properties--primarily the moisture content--of the underlying surface from photopolarimetry of the radiation diffusely reflected into space by the atmosphere-ground system. (Modified author abstract)

Descriptors :   *Soil tests, *Polarization, *Electromagnetic radiation, Moisture, Surface properties, Visible spectra, Reflection, Feasibility studies, Aerial photography

Subject Categories : Soil Mechanics
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE