Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory

Sea ice ridges and keels (hummocks and bummocks) are important in sea ice research for both scientific and practical reasons. A long-term objective is to make quantitative measurements of sea ice ridges using synthetic aperture radar (SAR) images. The preliminary results of a scattering model for se...

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Main Authors: Vesecky, J. F., Smith, M. P., Daida, J. M., Samadani, R., Camiso, J. C.
Format: Other/Unknown Material
Language:unknown
Published: 1992
Subjects:
48
Psi
Sea ice
Online Access:http://ntrs.nasa.gov/search.jsp?R=19930063814
id ftnasantrs:oai:casi.ntrs.nasa.gov:19930063814
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:19930063814 2023-05-15T18:16:21+02:00 Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory Vesecky, J. F. Smith, M. P. Daida, J. M. Samadani, R. Camiso, J. C. Unclassified, Unlimited, Publicly available 1992 http://ntrs.nasa.gov/search.jsp?R=19930063814 unknown http://ntrs.nasa.gov/search.jsp?R=19930063814 Accession ID: 93A47811 Copyright Other Sources 48 In: IGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vol. 2 (A93-47551 20-43); p. 955-957. 1992 ftnasantrs 2012-02-15T20:12:32Z Sea ice ridges and keels (hummocks and bummocks) are important in sea ice research for both scientific and practical reasons. A long-term objective is to make quantitative measurements of sea ice ridges using synthetic aperture radar (SAR) images. The preliminary results of a scattering model for sea ice ridge are reported. The approach is through the ridge height variance spectrum Psi(K), where K is the spatial wavenumber, and the two-scale scattering model. The height spectrum model is constructed to mimic height statistics observed with an airborne optical laser. The spectrum model is used to drive a two-scale scattering model. Model results for ridges observed at C- and X-band yield normalized radar cross sections that are 10 to 15 dB larger than the observed cross sections of multiyear ice over the range of angles of incidence from 10 to 70 deg. Other/Unknown Material Sea ice NASA Technical Reports Server (NTRS) Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic 48
spellingShingle 48
Vesecky, J. F.
Smith, M. P.
Daida, J. M.
Samadani, R.
Camiso, J. C.
Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
topic_facet 48
description Sea ice ridges and keels (hummocks and bummocks) are important in sea ice research for both scientific and practical reasons. A long-term objective is to make quantitative measurements of sea ice ridges using synthetic aperture radar (SAR) images. The preliminary results of a scattering model for sea ice ridge are reported. The approach is through the ridge height variance spectrum Psi(K), where K is the spatial wavenumber, and the two-scale scattering model. The height spectrum model is constructed to mimic height statistics observed with an airborne optical laser. The spectrum model is used to drive a two-scale scattering model. Model results for ridges observed at C- and X-band yield normalized radar cross sections that are 10 to 15 dB larger than the observed cross sections of multiyear ice over the range of angles of incidence from 10 to 70 deg.
format Other/Unknown Material
author Vesecky, J. F.
Smith, M. P.
Daida, J. M.
Samadani, R.
Camiso, J. C.
author_facet Vesecky, J. F.
Smith, M. P.
Daida, J. M.
Samadani, R.
Camiso, J. C.
author_sort Vesecky, J. F.
title Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
title_short Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
title_full Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
title_fullStr Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
title_full_unstemmed Measurement of pressure ridges in SAR images of sea ice - Preliminary results on scattering theory
title_sort measurement of pressure ridges in sar images of sea ice - preliminary results on scattering theory
publishDate 1992
url http://ntrs.nasa.gov/search.jsp?R=19930063814
op_coverage Unclassified, Unlimited, Publicly available
long_lat ENVELOPE(-63.000,-63.000,-64.300,-64.300)
geographic Psi
geographic_facet Psi
genre Sea ice
genre_facet Sea ice
op_source Other Sources
op_relation http://ntrs.nasa.gov/search.jsp?R=19930063814
Accession ID: 93A47811
op_rights Copyright
_version_ 1766189916690055168

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