Method and system for synthetic aperture sonar

a synthetic aperture and sonar technology, applied in the field of synthetic aperture sonar, can solve the problems of limited physical array length, limited performance of conventional active sonar systems, and inability to prevent acoustic propagation to long ranges

a synthetic aperture and sonar technology, applied in the field of synthetic aperture sonar, can solve the problems of limited physical array length, limited performance of conventional active sonar systems, and inability to prevent acoustic propagation to long ranges

US20060109743A1Active Publication Date: 2006-05-25RAYTHEON CO
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  • Method and system for synthetic aperture sonar
  • Method and system for synthetic aperture sonar
  • Method and system for synthetic aperture sonar

Examples

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Embodiment Construction

[0055] Before describing the method and system for a synthetic aperture sonar as contemplated herein, some introductory concepts and terminology are explained. As used herein, the term “side-scan sonar” refers to a type of sonar system having a tow body upon which a receive array having receive elements is disposed. The receive array of the side-scan sonar is generally horizontally disposed, and is subject to movements of the tow body. The receive array of the side-scan sonar can be used to generate “receive beams.” The tow body of the side-scan sonar can also include a transmit array to generate a “transmit beam” that can have the same beam shape or a different beam shape than the receive beams. The receive array and the transmit array can be the same physical array used in a receive mode or in a transmit mode. The side-scan sonar can operate in a monostatic arrangement.

[0056] As used herein, the term “towed array” is used to describe a receive array, which is towed through the wa...

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Abstract

A method and system for synthetic aperture sonar provide improved position estimates of a receive array as in moves through a body of water.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] Not Applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] Not Applicable. FIELD OF THE INVENTION [0003] This invention relates generally to synthetic aperture sonar and, more particularly, to a method and system for synthetic aperture sonar that provide improved spatial position of a moving sonar array used in a synthetic aperture sonar. BACKGROUND OF THE INVENTION [0004] Active sonar transmits a signal into the water, and receives echoes from targets in the water. The targets can include, but are not limited to, submarines, torpedoes, tethered mines, bottom mines, cables, and bottom features such as hills, trenches, and the bottom surface. [0005] Active sonar systems have a variety of configurations. Bistatic active sonar systems have an acoustic transmitter separate from an acoustic receiver. Monostatic active sonar systems have an acoustic transmitter co-located with an acoustic receiver. [0006] The acoustic receiver po...

Claims

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Application Information

Patent Timeline
25 May 2006
Publication
US20060109743A1
IPC
G01S15/00
CPC
G01S7/52003; G01S7/52004; G01S15/8904
Inventors
KOSALOS, JAMES G.; KERFOOT, IAN B.