Echo recognition system
US4380807A · kind A · utility
20Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1981 |
| Grant date | Apr 19, 1983 |
| Priority date | — |
| Expiry date | May 26, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/527
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An echo-type range finding system is rendered unresponsive to spurious signals and electronic noise, and has its object distance determining accuracy improved by rejecting signals that do not persist for a predetermined period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.