Optical radar transceiver control apparatus
US4716444A · kind A · utility
11Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The apparatus is part of an optical radar set and comprises a high powered O.sub.2 pulsed transmitter laser which is injection controlled to operate at a fixed frequency offset from a lower powered CO.sub.2 local oscillator laser. A portion of the output of the local oscillator laser is applied to an acousto-optic Bragg cell, together with an RF signal equal to the desired intermediate frequency of the radar set. The upshifted first order output of the Bragg cell is injected into the transmitter laser for stabilization purposes. This results in a stable intermediate frequency for the optical radar set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.