Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems
Reexamination Certificate
2008-03-11
2008-03-11
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Echo systems
Side scanning or contour mapping sonar systems
Reexamination Certificate
active
07342847
ABSTRACT:
A method is provided for along-track displacement of an underwater vehicle equipped with a synthetic aperture sonar (SAS) system. The SAS system is operated as the vehicle moves through the water. Using successively-detected acoustic signals, an actual redundant phase center overlap scenario is determined that is indicative of along-track displacement of the underwater vehicle occurring between the successively-detected acoustic signals.
REFERENCES:
William W. Bonifant, Jr.; Interferometic Synthetic Aperture Sonar Processing; 1999; pp. 1-161.
P. T. Gough and M. A. Miller; Improving the Quality of Synthetic Aperture Sonar Images Using Data-Driven Autofocus Techniques; Sep. 2003; pp. 677-680.
Pihulic Dan
Shepherd James T.
The United States of America as represented by the Secretary of
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