Time varying gain amplifier for side scan sonar applications
US4198702A · kind A · utility
26Cited by
18References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1978 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Apr 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time varying gain amplifier for a side scanning sonar system having a predetermined gain versus time relationship is disclosed. The gain is substantially proportional to the square of the elapsed time measured from the last sonar pulse initiating trigger signal. The amplifier in one embodiment employs a series connection of two amplifiers, each of which has a gain which varies linearly with the elapsed time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.