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Characterizing forest stands with multi-incidence angle and multi-polarized SAR dataThe potential for using HH-polarized L-band SAR data obtained at different incidence angles from satellite altitudes to identify and map different forest cover types and stand density classes is studied. Reasonably accurate results are obtained if the speckle characteristics of the data are suppressed by low-pass spatial filters and a contextual classification algorithm. Multipolarized L-band SAR data obtained from aircraft altitudes over the same test site are also analyzed to assess the relationships between polarization and forest stand characteristics. It is found that incidence angle controls, to a very large extent, the characteristics of the data and the type of information that can be obtained from L-band, HH-polarized satellite SAR data. Cross-polarization of L-band SAR data enhances and differentiates various forest stand characteristics which cannot be defined using only the like-polarized data, and vice-versa.
Document ID
19880040609
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hoffer, R. M.
(Purdue Univ. West Lafayette, IN, United States)
Lozano-Garcia, D. F.
(Purdue Univ. West Lafayette, IN, United States)
Gillespie, D. D.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Advances in Space Research
Volume: 7
Issue: 11 1
ISSN: 0273-1177
Subject Category
Earth Resources And Remote Sensing
Accession Number
88A27836
Funding Number(s)
CONTRACT_GRANT: NAS7-918
CONTRACT_GRANT: JPL-956952
Distribution Limits
Public
Copyright
Other

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