Active and Passive Remote Sensing of Ice

Fully polarimetric scattering of electromagnetic waves from snow and ice is studied with a multi-layered random medium model and applied to interpret experimental data obtained under laboratory controlled conditions such as CRRELEX. The snow layer is modeled as an isotropic random medium. The sea ic...

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Bibliographic Details
Main Author: Kong, J. A.
Other Authors: MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS
Format: Text
Language:English
Published: 1991
Subjects:
Active & Passive Radar Detection & Equipment
Radiofrequency Wave Propagation
*MATHEMATICAL MODELS
SCATTERING
EXPERIMENTAL DATA
LAYERS
PHYSICAL PROPERTIES
RANDOM VARIABLES
MATRICES(MATHEMATICS)
THEORY
SHAPE
PASSIVE SYSTEMS
POLARIMETRY
VARIATIONS
INCLUSIONS
THREE DIMENSIONAL
CORRELATION
SNOW
ICE
COEFFICIENTS
ELECTROMAGNETIC RADIATION
LENGTH
ANISOTROPY
ISOTROPISM
REMOTE DETECTORS
STRENGTH(GENERAL)
MEDIA
LABORATORIES
COVARIANCE
SEA WATER
FUNCTIONS(MATHEMATICS)
SEA ICE
BRINES
CONTROL
*REMOTE DETECTORS
*ICE SENSORS
BRINE INCLUSIONS
ICE PLATELETS
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA243288
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA243288
Description
Summary:Fully polarimetric scattering of electromagnetic waves from snow and ice is studied with a multi-layered random medium model and applied to interpret experimental data obtained under laboratory controlled conditions such as CRRELEX. The snow layer is modeled as an isotropic random medium. The sea ice is described as an anisotropic random medium due to the nonspherical shape of brine inclusions. The underlying sea water is considered as a homogeneous half-space. The random media in both layers are characterized by three-dimensional correlation functions with variances and correlation lengths corresponding to the fluctuation strengths and the physical geometries of the inhomogeneities, respectively. The strong fluctuation theory is used to calculate the effective permittivities of the random media. The distorted Born approximation is then employed to obtain the covariance matrix which represents the fully polarimetric scattering properties of the snow-ice media. It has been shown that the polarimetric covariance matrix contains more information than the conventional scattering coefficients on the remotely sensed media.

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