Independent landing monitor

Details Independent landing monitor Independent landing monitor

1979-12-07

1981-02-10

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 6DF, 343 12A, G01S 1300

Patent

active

042505054

ABSTRACT:
This invention comprises means for monitoring the operation of an aircraft landing guidance system which functions independently of the landing guidance system. The means include a radio altimeter aboard the aircraft, a reflector positioned on the ground at a predetermined location along the prescribed approach path to provide enhanced return of the altimeter signal and means for comparing the actual radio altitude with a predetermined altitude value to provide an indication of the location of the aircraft within a tolerable distance from a prescribed point on the approach path.

REFERENCES:
patent: 2536496 (1951-01-01), Falloon
patent: 2604621 (1952-07-01), Earp et al.
patent: 3765019 (1973-10-01), Kosowsky
patent: 3875551 (1975-04-01), Young

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