Co-registered acoustical and optical cameras for underwater imaging
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United States of America Patent
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Mar 16, 2004
Grant Date -
Mar 27, 2003
app pub date -
Sep 17, 2002
filing date -
Sep 17, 2001
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Abstract
A real-time, three dimensional, acoustical camera and a real-time, range-gated, intensified, electro-optical camera have substantially overlapping fields of view for co-registered imaging of underwater objects at close ranges. The system is typically mounted in an unmanned underwater vehicle but may be used in other fixed or mobile configurations. The coupled fields of view are steerable in an arc around at least one axis over a large field of regard with a servo-controlled rotating mirror system, while the vehicle or the target is moving or hovering. An automated target recognition system uses the multi-modality images to provide enhanced target recognition and/or autonomous operation in unmanned missions.
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