Method for the sonar classification of underwater objects, notably moored mines
US4951268A · kind A · utility
13Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | May 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a sonar used to determine the characteristics of the underwater mines, the emission diagram in the vertical plane is modified to obtain two main lobes separated by a central zero value. At reception, the bearing/frequency display system shows a dark strip separated by two luminous strips. When the echo from a mine persists, in going through the dark zone, it is recognized that it pertains to a moored mine floating in the water, thus enabling moored mines to be identified and their submersion depth measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.