Velocity measuring system
US4167330A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1977 |
| Grant date | Sep 11, 1979 |
| Priority date | — |
| Expiry date | Jul 8, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C3/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The relative transverse velocity between a local station and a zone of reference or observation is measured by providing first and second directional radiation receiving devices at the local station, such devices being aimed along parallel paths extending to the zone of reference. Such paths are spaced apart by a predetermined transverse distance. The first and second radiation receiving means include respective first and second converting means for converting the received radiation into first and second electrical signals. Any transversely moving radiation feature produces corresponding signal features in such first and second signals, such signal features being staggered with respect to time. The lapse of time between such staggered signal features is determined by time lapse measuring means. The velocity of such transverse movement is inversely proportional to such time lapse. The time lapse is preferably divided electronically into a constant which represents such transverse distance and a scale factor, to produce a quotient which is a direct measure of the velocity. The time lapse may be measured electronically with a high degree of accuracy. The received radiation may be eith…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.