Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Reexamination Certificate
2007-06-01
2008-11-18
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
Reexamination Certificate
active
07453769
ABSTRACT:
An exemplary embodiment of the present invention may include a cavitating body sonar system and method. The method may include, in an exemplary embodiment: applying a receiving-while-transmitting sonar signal processing to at least one cavitating body, over an entire range of achievable sonar operating frequencies; applying transmit wave-form shaping to a RWT sonar system employed on the cavitating body; applying heterodyne filter frequency rejection to the RWT sonar system employed on the cavitating body; applying detection processing techniques to the RWT sonar system employed on the cavitating body; employing at least one transducer as an acoustical transmitter near a scattering body comprising the cavitating body, wherein the at least one transducer is strategically located with respect to said cavitating body, at least one target, and a receiver, wherein the receiver lies in a shadow zone of the body, but the at least one target does not; and, employing at least one transducer as an acoustical transmitter near a scattering body comprising the cavitating body, wherein the at least one transducer is strategically located with respect to a cavity, at least one target, and a receiver, wherein direct propagation of a transmitted signal along the outside of the cavity to the receiver is inhibited, and reflected propagation from the acoustical transmitter to the target and thence reflected to the receiver is not inhibited.
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Freeman Larry
Kirschner Ivan N.
Lerro Donald T.
Martinez Rudolph
Uhlman, Jr. James S.
Albrecht Ralph P.
General Dynamics Information Technology, Inc.
Pihulic Dan
Venable LLP
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