Stable scalable digital frequency reference
US-2024204787-A1 · Jun 20, 2024 · US
Long baseline navigation system
US9389331B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9389331-B2 |
| Application number | US-201213564670-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2012 |
| Priority date | Aug 30, 2006 |
| Publication date | Jul 12, 2016 |
| Grant date | Jul 12, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
An acoustic navigation system includes a vessel and an interrogation unit towed behind the vessel below the surface of the water, a tail acoustic transponder trailing behind the interrogation unit, and a pair of surface acoustic transponders towed behind the vessel on the surface of the body of water. The interrogation unit generates an acoustic interrogation signal and receives responses from each of the tail acoustic transponder and the surface acoustic transponders from which it triangulates its position. The surface acoustic transponders may further include GPS receivers for receiving positioning information from GPS satellites. Additional acoustic transponders on instruments located on the floor of the body of water respond to the interrogation signal to allow triangulation of the location of the instruments.
First claim
Opening claim text (preview).
The invention claimed is: 1. A long baseline navigation system, the system comprising: a vessel; a deep-tow transmitter/interrogation unit configured for towing near a floor of a body of water, the transmitter/interrogation unit comprises an electromagnetic transmitter configured for emitting an electromagnetic signal for coupling with structures on the floor of the body of water to generate electric field gradients detectable by a plurality of antennae disposed on the floor of…
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Physics · mapped topic
- G01V3/12Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9389331B2 cover?
- An acoustic navigation system includes a vessel and an interrogation unit towed behind the vessel below the surface of the water, a tail acoustic transponder trailing behind the interrogation unit, and a pair of surface acoustic transponders towed behind the vessel on the surface of the body of water. The interrogation unit generates an acoustic interrogation signal and receives responses from …
- Who is the assignee on this patent?
- Constable Steven C, Key Kerry W, Univ California
- What technology area does this patent fall under?
- Primary CPC classification G01V3/12. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).