Integrated enroute and approach guidance system for aircraft

Details Integrated enroute and approach guidance system for aircraft Integrated enroute and approach guidance system for aircraft

1991-02-08

1993-06-01

Black, Thomas G.

Boots, shoes, and leggings

364428, 342413, G06F 1550

Patent

active

052166112

ABSTRACT:
Data from long range aids such as the global positioning system (GPS) and an inertial navigation system (INS) and short range aids such as a microwave landing system (MLS) are used to smoothly and automatically transition an aircraft from the long range aids to the short range aids. During cruise a Kalman filter combines data from the global positioning system and the inertial navigation system to provide accurate enroute information. When the aircraft arrives in the vicinity of the airport and begins to acquire valid data from the microwave landing system, the Kalman filter is calibrated with the MLS data to permit Precision landing with GPS/INS data alone in case the MLS system subsequently fails. In addition, navigation information begins to be derived from a weighted sum of the GPS/INS and MLS data, the weighting being determined by distance from the airport. In a first region farthest from the airport, the GPS/INS data is given a 1.0 weighting factor; and in a second region nearest the airport, the MLS data is given a 1.0 weighting factor. In a third region intermediate the first and second regions, the GPS/INS data and MLS data are proportionately and complementarily weighted as a function of the distance from the airport. If the MLS system fails, the weighting system is disabled and navigation data is again derived from the GPS/INS combination. In addition, the data from both systems are monitored, and a cockpit alarm is sounded if the data diverges beyond a specified amount.

REFERENCES:
patent: 4534000 (1985-08-01), Bliss
patent: 4792904 (1988-12-01), Reinagel et al.
patent: 4814771 (1989-03-01), Bahr et al.
patent: 4894655 (1990-01-01), Jogu et al.
patent: 4899285 (1990-02-01), Nikayama

Affiliated with

Also associated with

Rating

Integrated enroute and approach guidance system for aircraft does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated enroute and approach guidance system for aircraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated enroute and approach guidance system for aircraft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1819711