Process and device for locating noise emitters with an antenna consisting of passive acoustic buoys
US5457662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a device for locating noise emitters with an antenna comprising passive sensors. In a preferred variant, the antenna consists of N acoustic buoys each comprising a pair of hydrophone dipoles exhibiting a double-eight directivity diagram. Each buoy comprises a compass providing a signal K.sub.n representing the heading relative to magnetic North. The pairs of signals (a.sub.1 -b.sub.1 to a.sub.N -b.sub.N) are subjected to a rotation by the angle K.sub.n. The signals are next digitized and the number P of noise emitters estimated. The locating of these noise emitters can be performed according to two variants (8, 9).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.