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Author Wegmuller, U. ♦ Cordey, R.A. ♦ Werner, C. ♦ Meadows, P.J.
Sponsorship IEEE Geoscience and Remote Sensing Society ♦ IEEE ♦ URSI ♦ IEEE Geoscience and Remote Sensing Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1980
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Earth sciences ♦ Geology, hydrology & meteorology
Subject Keyword Radar scattering ♦ Lighting ♦ Radar imaging ♦ Radar measurements ♦ Spaceborne radar ♦ Synthetic aperture radar ♦ Backscatter ♦ Satellites ♦ Azimuth ♦ Predictive models ♦ synthetic aperture radar (SAR) ♦ Agriculture ♦ directive scattering ♦ flashing fields
Description Large differences are observed between radar backscatter measurements made by the ENVISAT and ERS-2 satellite synthetic aperture radars, within 30 min of each other over certain agricultural fields in Flevoland, The Netherlands. The differences appear to be caused by the presence of highly directive scattering combined with very small variations in the azimuth illumination angle of the two sensors at the degree or subdegree level. There is relatively little awareness of such sensitivity to illumination direction, and it is not predicted by models for microwave interaction usually applied to soils and vegetation. It is, however, to be expected if there are significant contributions from coherent scattering extending over patches of the agricultural fields in question. We present analysis that supports such a conclusion.
ISSN 01962892
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-04-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 44
Issue Number 4
Size (in Bytes) 798.49 kB
Page Count 5
Starting Page 801
Ending Page 805

Source: IEEE Xplore Digital Library