Advanced instrument landing system
US4866450A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for landing an aircraft is described, using a ground installation and an airborne installation which are synchronized together using GPS system time. Specifically, the ground installation includes a ground transmitter which radiates the sequence of signals which provide precision guidance information to the aircraft, an aircraft installation which includes a radio receiver and a processor to receive and process the transmitted guidance signals and to provide indications to aid the pilot in landing the aircraft, a GPS receiver in the air and on the ground for producing signals representative of GPS system time, and a channel selector in the aircraft for actuating the processor to synchronize its operation with the ground installation transmitter. Range information is provided by measuring the time interval between the transmission of a reference at the ground and its receipt in the air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.