Active and Passive Remote Sensing of Ice.
We have studied volume scattering effects of snow-covered sea ice with a three-layer random medium model for microwave remote sensing. Strong fluctuation theory and bilocal approximation are applied to calculate the effective permittivities for snow and sea ice. Wave scattering theory, in conjunctio...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1987
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA186685 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA186685 |
id |
ftdtic:ADA186685 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA186685 2023-05-15T15:39:45+02:00 Active and Passive Remote Sensing of Ice. Kong, Jin A MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS 1987-07-31 text/html http://www.dtic.mil/docs/citations/ADA186685 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA186685 en eng http://www.dtic.mil/docs/citations/ADA186685 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Radiofrequency Wave Propagation *ELECTROMAGNETIC SCATTERING *SEA ICE ANISOTROPY BACKSCATTERING SCATTERING CROSS SECTIONS LAYERS CROSS POLARIZATION MOMENTS ELECTROMAGNETIC WAVE PROPAGATION FORMULATIONS MIXING ORIENTATION(DIRECTION) BISTATIC DETECTION COEFFICIENTS CORRELATION SCATTERING VARIATIONS MIXTURES PHASE MATHEMATICAL MODELS POLARIZATION COVARIANCE BARROW(ALASKA) RADAR POLARIMETRY CLUTTER GREENS FUNCTIONS ICE MEAN APPROXIMATION(MATHEMATICS) NONLINEAR SYSTEMS SNOW COVER LENGTH VERTICAL ORIENTATION WAVE PROPAGATION HORIZONTAL ORIENTATION DIELECTRIC PROPERTIES MICROWAVES REMOTE SYSTEMS ELLIPSOIDS VOLUME Permittivity Multiphase mixtures Active detectors Volume scattering. Text 1987 ftdtic 2016-02-21T14:25:54Z We have studied volume scattering effects of snow-covered sea ice with a three-layer random medium model for microwave remote sensing. Strong fluctuation theory and bilocal approximation are applied to calculate the effective permittivities for snow and sea ice. Wave scattering theory, in conjunction with the distorted Born approximation, is then used to compute bistatic coefficients and backscattering cross sections. We also derived a general mixing formula for discrete scatterers immersed in a host medium. The results are applicable to general multiphase mixtures, and the scattering ellipsoids of the different phases can have different sizes and arbitrary ellipticity distribution and axis orientation, i.e., the mixture may be isotropic or anisotropic. The Mueller matrix and polarization covariance matrix are described for polarimetric radar systems. Clutter is modelled by a layer of random permittivity, described by a three-dimensional correlation function, with variance, and horizontal and vertical correlation lengths. Study of the strong fluctuation theory for a bounded layer of random discrete scatterers is extended to include high-order co-polarized and cross-polarized second moments. We have derived the dyadic Green's function for a two-layer anisotropic medium. The Born approximation is used to calculate the scattered fields. Electromagnetic wave propagation and scattering in an anisotropic random medium was examined with Dyson equation for the mean field. This is solved by bilocal and nonlinear approximations and with Bethe-Salpeter equation for the correlation of field. Text Barrow Ice permafrost Sea ice Alaska Defense Technical Information Center: DTIC Technical Reports database Mueller ENVELOPE(55.533,55.533,-66.917,-66.917) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Radiofrequency Wave Propagation *ELECTROMAGNETIC SCATTERING *SEA ICE ANISOTROPY BACKSCATTERING SCATTERING CROSS SECTIONS LAYERS CROSS POLARIZATION MOMENTS ELECTROMAGNETIC WAVE PROPAGATION FORMULATIONS MIXING ORIENTATION(DIRECTION) BISTATIC DETECTION COEFFICIENTS CORRELATION SCATTERING VARIATIONS MIXTURES PHASE MATHEMATICAL MODELS POLARIZATION COVARIANCE BARROW(ALASKA) RADAR POLARIMETRY CLUTTER GREENS FUNCTIONS ICE MEAN APPROXIMATION(MATHEMATICS) NONLINEAR SYSTEMS SNOW COVER LENGTH VERTICAL ORIENTATION WAVE PROPAGATION HORIZONTAL ORIENTATION DIELECTRIC PROPERTIES MICROWAVES REMOTE SYSTEMS ELLIPSOIDS VOLUME Permittivity Multiphase mixtures Active detectors Volume scattering. |
spellingShingle |
Snow Ice and Permafrost Radiofrequency Wave Propagation *ELECTROMAGNETIC SCATTERING *SEA ICE ANISOTROPY BACKSCATTERING SCATTERING CROSS SECTIONS LAYERS CROSS POLARIZATION MOMENTS ELECTROMAGNETIC WAVE PROPAGATION FORMULATIONS MIXING ORIENTATION(DIRECTION) BISTATIC DETECTION COEFFICIENTS CORRELATION SCATTERING VARIATIONS MIXTURES PHASE MATHEMATICAL MODELS POLARIZATION COVARIANCE BARROW(ALASKA) RADAR POLARIMETRY CLUTTER GREENS FUNCTIONS ICE MEAN APPROXIMATION(MATHEMATICS) NONLINEAR SYSTEMS SNOW COVER LENGTH VERTICAL ORIENTATION WAVE PROPAGATION HORIZONTAL ORIENTATION DIELECTRIC PROPERTIES MICROWAVES REMOTE SYSTEMS ELLIPSOIDS VOLUME Permittivity Multiphase mixtures Active detectors Volume scattering. Kong, Jin A Active and Passive Remote Sensing of Ice. |
topic_facet |
Snow Ice and Permafrost Radiofrequency Wave Propagation *ELECTROMAGNETIC SCATTERING *SEA ICE ANISOTROPY BACKSCATTERING SCATTERING CROSS SECTIONS LAYERS CROSS POLARIZATION MOMENTS ELECTROMAGNETIC WAVE PROPAGATION FORMULATIONS MIXING ORIENTATION(DIRECTION) BISTATIC DETECTION COEFFICIENTS CORRELATION SCATTERING VARIATIONS MIXTURES PHASE MATHEMATICAL MODELS POLARIZATION COVARIANCE BARROW(ALASKA) RADAR POLARIMETRY CLUTTER GREENS FUNCTIONS ICE MEAN APPROXIMATION(MATHEMATICS) NONLINEAR SYSTEMS SNOW COVER LENGTH VERTICAL ORIENTATION WAVE PROPAGATION HORIZONTAL ORIENTATION DIELECTRIC PROPERTIES MICROWAVES REMOTE SYSTEMS ELLIPSOIDS VOLUME Permittivity Multiphase mixtures Active detectors Volume scattering. |
description |
We have studied volume scattering effects of snow-covered sea ice with a three-layer random medium model for microwave remote sensing. Strong fluctuation theory and bilocal approximation are applied to calculate the effective permittivities for snow and sea ice. Wave scattering theory, in conjunction with the distorted Born approximation, is then used to compute bistatic coefficients and backscattering cross sections. We also derived a general mixing formula for discrete scatterers immersed in a host medium. The results are applicable to general multiphase mixtures, and the scattering ellipsoids of the different phases can have different sizes and arbitrary ellipticity distribution and axis orientation, i.e., the mixture may be isotropic or anisotropic. The Mueller matrix and polarization covariance matrix are described for polarimetric radar systems. Clutter is modelled by a layer of random permittivity, described by a three-dimensional correlation function, with variance, and horizontal and vertical correlation lengths. Study of the strong fluctuation theory for a bounded layer of random discrete scatterers is extended to include high-order co-polarized and cross-polarized second moments. We have derived the dyadic Green's function for a two-layer anisotropic medium. The Born approximation is used to calculate the scattered fields. Electromagnetic wave propagation and scattering in an anisotropic random medium was examined with Dyson equation for the mean field. This is solved by bilocal and nonlinear approximations and with Bethe-Salpeter equation for the correlation of field. |
author2 |
MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS |
format |
Text |
author |
Kong, Jin A |
author_facet |
Kong, Jin A |
author_sort |
Kong, Jin A |
title |
Active and Passive Remote Sensing of Ice. |
title_short |
Active and Passive Remote Sensing of Ice. |
title_full |
Active and Passive Remote Sensing of Ice. |
title_fullStr |
Active and Passive Remote Sensing of Ice. |
title_full_unstemmed |
Active and Passive Remote Sensing of Ice. |
title_sort |
active and passive remote sensing of ice. |
publishDate |
1987 |
url |
http://www.dtic.mil/docs/citations/ADA186685 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA186685 |
long_lat |
ENVELOPE(55.533,55.533,-66.917,-66.917) |
geographic |
Mueller |
geographic_facet |
Mueller |
genre |
Barrow Ice permafrost Sea ice Alaska |
genre_facet |
Barrow Ice permafrost Sea ice Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA186685 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766371797029093376 |