Echo distance-measuring system with calibration apparatus
US5442360A · kind A · utility
13Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The calibration apparatus (16) includes a recirculating optical delay loop (22) constituted by two delaying fibers (F2, F3), an optical amplifier (28), and a coupler (26) for providing a succession of a plurality of delayed optical signals (OR) in response to a single initial signal (OA). The invention is particularly to radars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.