Sonar receiver with improved time varied gain correction
US5392257A · kind A · utility
8Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Aug 23, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Individual elements of a sonar receiver transducer provide output signals in response to the receipt of acoustic energy and signals are processed to form one or more receiver beams for display. Each element output is provided to a preamplifier to which is applied a time varied gain function. The output signal of at least one of the preamplifiers is additionally provided to an adaptive time varied gain circuit which generates an error signal for correction of the time varied gain function applied to the preamplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.