Electromagnetic wave probing of Earth's environment
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...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19880004850 2023-05-15T18:01:43+02:00 Electromagnetic wave probing of Earth's environment Kong, Jin AU Unclassified, Unlimited, Publicly available Jan 22, 1988 application/pdf http://hdl.handle.net/2060/19880004850 unknown Document ID: 19880004850 Accession ID: 88N14232 http://hdl.handle.net/2060/19880004850 No Copyright CASI COMMUNICATIONS AND RADAR NASA-CR-182358 NAS 1.26:182358 1988 ftnasantrs 2019-07-21T04:23:33Z 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. Other/Unknown Material Point Barrow Sea ice NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
topic |
COMMUNICATIONS AND RADAR |
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COMMUNICATIONS AND RADAR Kong, Jin AU Electromagnetic wave probing of Earth's environment |
topic_facet |
COMMUNICATIONS AND RADAR |
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. |
format |
Other/Unknown Material |
author |
Kong, Jin AU |
author_facet |
Kong, Jin AU |
author_sort |
Kong, Jin AU |
title |
Electromagnetic wave probing of Earth's environment |
title_short |
Electromagnetic wave probing of Earth's environment |
title_full |
Electromagnetic wave probing of Earth's environment |
title_fullStr |
Electromagnetic wave probing of Earth's environment |
title_full_unstemmed |
Electromagnetic wave probing of Earth's environment |
title_sort |
electromagnetic wave probing of earth's environment |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19880004850 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Point Barrow Sea ice |
genre_facet |
Point Barrow Sea ice |
op_source |
CASI |
op_relation |
Document ID: 19880004850 Accession ID: 88N14232 http://hdl.handle.net/2060/19880004850 |
op_rights |
No Copyright |
_version_ |
1766171223780229120 |