Method and apparatus for measuring the depth of an underwater target
US5623524A · kind A · utility
16Cited by
0References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1967 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Mar 1, 1987 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the depth of a marine target relat to the surface of the water which encompasses an analog processing circuit for detecting and analyzing signals reflected respectively from a target and the water surface, a timing and gating circuit respectively responsive to a target echo signal for initiating a timing sequence and to a surface echo signal for terminating the timing sequence, and a depth readout circuit for indicating the depth of the target below the surface at the instant the surface echo signal terminates the timing sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.