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Digital processing of orbital radar data to enhance geologic structure - Examples from the Canadian ShieldVarious digital enhancement techniques for SAR are compared using SIR-B and Seasat images of the Canadian Shield. The three best methods for enhancing geological structure were found to be: (1) a simple linear contrast stretch; (2) a mean or median low-pass filter to reduce speckle prior to edge enhancement or a K nearest-neighbor average to cosmetically reduce speckle; and (3) a modification of the Moore-Waltz (1983) technique. Three look directions were coregistered and several means of data display were investigated as means of compensating for radar azimuth biasing.
Document ID
19880051873
Document Type
Reprint (Version printed in journal)
Authors
Masuoka, Penny M. (Science Applications Research Lanham, MD, United States)
Harris, Jeff (Intera Technologies, Ltd. Ottawa, Canada)
Lowman, Paul D., Jr. (Science Applications Research Lanham, MD, United States)
Blodget, Herbert W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
May 1, 1988
Publication Information
Publication: Photogrammetric Engineering and Remote Sensing
Volume: 54
ISSN: 0099-1112
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS5-28200
Distribution Limits
Public
Copyright
Other