Radar altimeter systems

Details Radar altimeter systems Radar altimeter systems

1988-10-04

1990-01-16

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Altimeter

342 64, G01S 1308

Patent

active

048946591

ABSTRACT:
An aircraft microwave altimeter system has a threshold detector with two parallel channels that provide two sets of output signals at two different levels of sensitivity. The signals at the higher sensitivity are supplied to a display whereas those at the lower sensitivity are supplied to a navigation system. A comparator indicates a fault in the system if the two sets of output signals differ by more than a predetermined amount.

REFERENCES:
patent: 3213451 (1965-10-01), Alpers
patent: 3277467 (1966-10-01), Barney
patent: 3781530 (1973-12-01), Britland et al.
patent: 4698635 (1987-10-01), Hilton et al.

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