DocumentCode :
2941334
Title :
Underwater Mapping Using Gloria and MIPS
Author :
Chavez, Pat S., Jr. ; Anderson, Jeffrey A. ; Schoonmaker, James W., Jr.
Author_Institution :
U.S. Geological Survey, Flagstaff, AZ, USA
fYear :
1987
fDate :
Sept. 28 1987-Oct. 1 1987
Firstpage :
1202
Lastpage :
1205
Abstract :
Advances in digital image processing of Geological Long Range Inclined ASDIC (GLORIA) sidescan sonar image data have made it technically and economically possible to map large areas of the ocean floor including the Exclusive Economic Zone. Software was written to correct both geometric and radiometric distortions that exist in the original "raw" GLORIA data. Preprocessing GLORIA-specific algorithms include correctlons for slant-range geometry, water column offset, aspect ratio distortion, ship\´s velocity changes, speckle noise, and shading due to signal dropoff as a function of range. A digital mosaicking technique was developed enabling 2- by 2-degree quadrangles to be generated. This operational software package is part of the U.S. Geological Survey\´s Mini Image Processing System.
Keywords :
Acoustic beams; Acoustic pulses; Azimuth; Data mining; Digital images; Image analysis; Image processing; Radar tracking; Radiometry; Sonar measurements;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
OCEANS '87
Conference_Location :
Halifax, NS, Canada
Type :
conf
DOI :
10.1109/OCEANS.1987.1160723
Filename :
1160723
Link To Document :
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