Distance measuring equipment
US3969725A · kind A · utility
33Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Jun 12, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/76
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is improved distance measuring equipment comprising an airborne FM coded, chirp, interrogator transmitter in combination with a weighted matched receiver in a ground transponder. The airborne transmitter produces a long low power frequency modulated output pulse. Detection in the transponder receiver is accomplished by pulse compression matched filter techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.