Method for determining, recording and sending GPS location data in an underwater environment
US6941226B2 · kind B2 · utility
61Cited by
5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | May 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Underwater position determination is provided by combining sonar-derived ranging data between a sonar receiver and a sonar transmitter with GPS position data to provide geographically-referenced position data accurately representing the position of a sonar receiver carried or worn by a diver or submersible vehicle. Function and accuracy enhancements are provided to compensate for diver and sonar transmitter and depth difference and differences of sonar signal propagation speed as well as several techniques of compensation for change of position of the GPS receiver and for logging diver and/or vehicle path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.