Active element array apparatus for displaced phase center...

Details Active element array apparatus for displaced phase center... Active element array apparatus for displaced phase center...

2005-06-28

2005-06-28

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Beam stabilization or compensation

C367S088000

Reexamination Certificate

active

06912176

ABSTRACT:
A synthetic aperture side looking sonar system which includes an array of active elements, which provide output signals in response to acoustic reflections received from a target area, during travel over the target area. The array has a first section of elements, the output signals of which are used to obtain target information. The array additionally has a second section, including space apart transducers, the output signals of which are used exclusively to determine yaw and sway of the system, as it travels over the target area. Signal processing circuitry, using displaced phase center principles, is provided, and is responsive to the element output signals to derive yaw and sway correction signals for synthetic aperture beam formation.

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