Acoustic emission system for seismic surveying at sea
US5319609A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Oct 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An acoustic emission system for seismic surveying at sea, for the purpose of emitting a soundwave in a given direction, the system comprising firstly a plurality of immersed sources mechanically connected to at least one float means and secondly a control circuit for controlling said sources and comprising a plurality of delay means suitable for applying respective phase delays to each of the sources, said delays being defined by a nominal phase law associated with said given emission direction. According to the invention, the system also includes at least two attitude sensors providing signals representative of the absolute position of at least two of said sources to correction means of said control circuit, said correction means providing each of said delay means with a signal for correcting the nominal phase law and representative of variations in the relative positions of the sources. This system has application to geological prospecting by seismic surveying at sea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.