Millimeter wave locating
US4940986A · kind A · utility
35Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1986 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for landing aircraft during low visibility includes a number of millimeter wave sources in or near the runway light housings radiating millimeter wave beams along the runway. An airborne millimeter wave camera includes a millimeter wave lens that focuses the image of the millimeter wave sources upon a hemispherical detector array that provides signals processed to create an image of the millimeter wave sources corresponding substantially to the visible image perceived by a landing pilot when observing the runway light pattern during good visibility conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.