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I. CampbellQinetiQ +44 (0) 8700 100 942 Abstract: Synthetic Aperture Sonark a key enabling technology in the use of Autonomous UndeMater Vehicles for underwater reconnaissance and survey missions. In comparison to conventional fixed aperture, sonar, SAS offers the potential of range independent azimuth resolution and increased signal to noise. In order to achieve this potential, robust signal processing is required to accurately estimate the arrival time of each ping that is to be used in the synthesis of an aperture, and the orientation and position of the platform over the aperture synthesis period.
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