Underwater acoustic positioning system and method
US8009516B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2009 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Feb 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining the position of an underwater device includes placement of a plurality of station keeping devices on or below the surface of the water in known positions. A device to locate is provided for placement below the surface of the water, and the device to locate and the station keeping devices are provided with a synchronized time base and a common acoustic pulse time schedule. Each station keeping device sends an acoustic pulse at a time according to the common acoustic pulse schedule. The device to locate receives pulses sent by the station keeping devices and calculates a distance between itself and each station keeping device based upon the time that the acoustic pulse is sent and the time that the pulse is received. The device to locate then calculates its position based upon the distances between the device to locate and the station keeping devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.