Floating base vector sensor
AssigneeThe Government of the United States of America, as represented by the Secretary of the Navy
InventorsMaxim K. Zalalutdinov, Douglas M. Photiadis, Joseph A. Bucaro, Brian H. Houston
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Abstract
Systems and methods are provided for sensing acoustic signals using a floating base vector sensor. A vector sensor according to an embodiment of the present disclosure can be used to detect and characterize low frequency sound wave(s) in a viscous medium (e.g., air, water, etc.) by detecting a periodic motion of the media particles associated with the sound wave(s). The orientation of the particle velocity deduced from such measurements can provide information regarding the wave vector of the sound wave(s), can define the direction of arrival (DOA) for the acoustic signal, and can assist locating the source of the sound of interest.
Claims20
A vector sensor, comprising:
- a tower comprising a plurality of flow channels, wherein the tower is configured to detect a relative displacement of viscous liquid that fills the plurality of flow channels;
- a retaining thread coupled to the tower;
- and
- an anchor coupled to the retaining thread.
A vector sensor, comprising:
- a tower comprising a plurality of flow channels;
- a plurality of flow sensors places inside respective cavities of respective flow channels in the plurality of flow channels, wherein the plurality of flow sensors are configured to detect a relative displacement of viscous liquid that fills the plurality of flow channels;
- a retaining thread coupled to the tower;
- and
- an anchor device, coupled to the retaining thread, wherein the anchor device is configured to:
- receive an incoming signal corresponding to the detected displacement of the viscous liquid, and
- transmit a signal corresponding to the detected displacement of the viscous liquid to an external device.
A vector sensor, comprising:
- a tower, comprising:
- a transmitter,
- a memory,
- a battery, and
- a plurality of flow channels;
- a plurality of flow sensors places inside respective cavities of respective flow channels in the plurality of flow channels, wherein the plurality of flow sensors are configured to detect a relative displacement of viscous liquid that fills the plurality of flow channels;
- a retaining thread coupled to the tower;
- and
- an anchor coupled to the retaining thread, wherein the tower is configured to be detached from the anchor by decoupling the tower from the retaining thread, thereby enabling the tower to float to a surface of a body of water, and wherein the transmitter is configured to transmit information stored in the memory after the tower has reached the surface of the body of water.
Dependencies are inferred from the claim text.