Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation
A general theory of intensity scattering from small particles of arbitrary shape has been developed based on the radiative transfer theory. Upon permitting the particles to orient in accordance with any prescribed distribution, scattering models can be derived. By making an appropriate choice of the...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1983
|
Subjects: | |
Online Access: | http://ntrs.nasa.gov/search.jsp?R=19850035442 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19850035442 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19850035442 2023-05-15T18:18:15+02:00 Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation Karam, M. A. Fung, A. K. Unclassified, Unlimited, Publicly available JAN 1, 1983 http://ntrs.nasa.gov/search.jsp?R=19850035442 unknown http://ntrs.nasa.gov/search.jsp?R=19850035442 Accession ID: 85A17593 Copyright Other Sources 43 1983 International Geoscience and Remote Sensing Symposium (IGARSS '83); August 31-September 2, 1983; San Francisco, CA 1983 ftnasantrs 2012-02-15T16:16:57Z A general theory of intensity scattering from small particles of arbitrary shape has been developed based on the radiative transfer theory. Upon permitting the particles to orient in accordance with any prescribed distribution, scattering models can be derived. By making an appropriate choice of the particle size, the scattering model may be used to estimate scattering from media such as snow, vegetation and sea ice. For the purpose of illustration only comparisons with measurements from a vegetated medium are shown. The difference in scattering between elliptic- and circular-shaped leaves is demonstrated. In the low-frequency limit, the major factors on backscattering from vegetation are found to be the depth of the vegetation layer and the orientation distribution of the leaves. The shape of the leaf is of secondary importance. Other/Unknown Material Sea ice NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
43 |
spellingShingle |
43 Karam, M. A. Fung, A. K. Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
topic_facet |
43 |
description |
A general theory of intensity scattering from small particles of arbitrary shape has been developed based on the radiative transfer theory. Upon permitting the particles to orient in accordance with any prescribed distribution, scattering models can be derived. By making an appropriate choice of the particle size, the scattering model may be used to estimate scattering from media such as snow, vegetation and sea ice. For the purpose of illustration only comparisons with measurements from a vegetated medium are shown. The difference in scattering between elliptic- and circular-shaped leaves is demonstrated. In the low-frequency limit, the major factors on backscattering from vegetation are found to be the depth of the vegetation layer and the orientation distribution of the leaves. The shape of the leaf is of secondary importance. |
format |
Other/Unknown Material |
author |
Karam, M. A. Fung, A. K. |
author_facet |
Karam, M. A. Fung, A. K. |
author_sort |
Karam, M. A. |
title |
Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
title_short |
Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
title_full |
Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
title_fullStr |
Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
title_full_unstemmed |
Scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
title_sort |
scattering from randomly oriented scatterers of arbitrary shape in the low-frequency limit with application to vegetation |
publishDate |
1983 |
url |
http://ntrs.nasa.gov/search.jsp?R=19850035442 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19850035442 Accession ID: 85A17593 |
op_rights |
Copyright |
_version_ |
1766194759002488832 |