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US 6,856,580 B2Granted
Naval-hull mounted sonar for naval ship
AssigneeThales
InventorMichel Eyries
Life of this patent
Estimating the term…
Abstract
The invention relates to hull sonars for a naval vessel. The hull sonar includes associating a transmitter formed by cylindrical rings with a receiver formed by at least two sets of hydrophones distributed over two transparent cylindrical surfaces that are coaxial with the transmitter. Thus, it is possible to reduce the weight and the total volume of the antenna and to compensate for the effect of the quality factor Q.
Claims22
A hull sonar for a naval vessel, including a low-frequency transmission antenna with elevational directionality formed by a stack of piezoelectric rings, comprising:
- a transparent three-dimensional reception antenna formed by two sets of omnidirectional hydrophones distributed over two cylindrical surfaces that are concentric and coaxial with the transmission antenna
- wherein the transmission antenna is suspended so as to remain vertical in order to compensate for the rolling and pitching movements of the vessel carrying it.
Dependencies are inferred from the claim text.