Position and velocity measuring system
US5008860A · kind A · utility
5Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/874
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position and velocity determining system, that uses two functioned receiver-transmitters. In performing a first function, each receiver-transmitter transmits an acoustic pulse at a unique frequency, in response to a first received accoustic pulse. In performing a second function, each receiver-transmitter transmits a continuous acoustic signal at a unique frequency, in response to a second received acoustic pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.