Method and system for distributed acoustic sensing in a marine environment
US11874417B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2018 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Mar 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a system for distributed acoustic sensing in a marine environment surrounding a repeater along a fibre-optic submarine communications cable. The system includes at least one distributed acoustic sensing (DAS) unit. Each DAS unit further includes a light source that is configured to transmit outgoing light in at least one fibre-optic sensing cable that is located in the marine environment and a receiver configured to receive reflected light that includes at least one optical property influenced by an acoustic disturbance in the marine environment. Each DAS unit further includes an optical multiplexer for multiplexing optical signals onto the fibre-optic submarine communications cable via the repeater where the optical signals carry information on the at least influenced optical property. A method for distributed acoustic sensing in the marine environment is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.