Abstract
ABSTRACTHigh resolution shallow water side‐scan sonars are mapping instruments that produce detailed images of the seafloor over which they are towed. Side‐scan sonars are used for a variety of applications, including geologic surveying and minehunting. Raw side‐scan data, stored on digital tape, contains many geometric and radiometric errors. Post‐processing corrects these errors and maximizes the usefulness of the data.The Borland PASCAL program SIDESCAN has been developed for sonograph display and analysis. The program runs on standard MS‐DOS microcomputers and displays fully corrected image segments and mosaics. Merging satellite navigation data with the side scan imagery yields ground registered images, allowing a user to accurately locate (in latitude/longitude corrdinates) and measures any bottom feature or overlay bathymetric contours. A digital image of the Severn River bottom demonstrates the power of the process.
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