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- W141514926 abstract "Abstract : This report analyzes the feasibility of extracting bathymetric information from data collected by the SEASAT satellite. An SAR system can provide bathymetric information by recording variations in radar backscatter which are due to an interaction between a hydrographic feature and a physical oceanic process. Data from four SEASAT passes were used to examine 5 study sites: Two in the Bahamas, one around Nantucket Island, one in the English Channel and one around North Rona Rock, Scotland. Analysis techniques included bathymetric correlations (comparison of the position of SAR observed surface features to the position of distinct bottom topographic features), photographic enhancement and special optical processing techniques (to bring out additional, previously unobserved features on the SAR imagery), and relative radar backscatter measurements. For the sites chosen, a high degree of correlation existed between the SAR observed surface phenomena and ocean bottom topographic features. At both Bahama sites the SAR-observed surface features were quite subtle, and attempts to gain further information through photographic enhancement and optical processing techniques were not successful within the scope of this effort. Relative radar backscatter measurements made at 4 of the 5 sites indicated that a high percentage of the SAR observed surface features were positioned directly above a major bottom topographic feature. Backscatter measurements had variations as high as 6 dB." @default.
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- W141514926 date "1980-04-30" @default.
- W141514926 modified "2023-09-27" @default.
- W141514926 title "Detection of Bathymetric Features Using SEASAT Synthetic Aperture Radar a Feasibility Study" @default.
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