NDLI: Electromagnetic wave probing of earth's environment

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Electromagnetic wave probing of earth's environment

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kong, Jin AU
Copyright Year	1988
Description	Polarimetric radar backscattering from anisotropic Earth terrain such as snow-covered ice fields and vegetation fields with row structures provides a challenging modeling problem from the electromagnetic wave point of view. Earth terrain covers are modeled as random media characterized by different dielectric constants and correlation functions. A three-layer model will be used to simulate a vegetation field or a snow-covered ice field with the top layer being snow or leaves, the middle layer being ice of trunks, and the bottom layer being sea water or ground. The volume scattering effects of snow-covered sea ice are studied with a three-layer random medium model for microwave remote sensing. The strong fluctuation theory and the bilocal approximation are applied to calculate the effective permittivities for snow and sea ice. The wave scattering theory in conjunction with the distorted Born approximation is then used to compute bistatic coefficients and backscattering cross sections. Theoretical results are illustrated by matching experimental data for dry snow-covered thick first-year sea ice at Point Barrow. The results derived can also be applied to the passive remote sensing by calculating the emissivity from the bistatic scattering coefficients.
File Size	230695
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19880004850
Archival Resource Key	ark:/13960/t7mp9xm39
Language	English
Publisher Date	1988-01-22
Access Restriction	Open
Subject Keyword	Communications And Radar Polarimeters Terrain Backscattering Scattering Cross Sections Vegetation Electromagnetic Radiation Permittivity Earth Planet Born Approximation Radar Measurement Sea Ice Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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