Underwater mapping apparatus and method
US4232380A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1978 |
| Grant date | Nov 4, 1980 |
| Priority date | — |
| Expiry date | Apr 14, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for producing a linear plan view display of a seabed, employing a side scan sonar signal system, have circuitry for repeatedly determining the height of the transmitting source relative to the seabed, circuitry for sampling the returning sonar signals, and circuitry for providing from the height determination and the sampled signals, the slant range correction needed to provide a linear output display, at least in a direction normal to the direction of movement of the transmitting source. The preferred method and apparatus also have elements for determining the velocity of the transmitting source and for effecting a one-to-one aspect ratio linear plan view of the seabed topography. In other aspects of the invention, a method and apparatus for controlling the display and for implementing the mapping transformation are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.