Integrity monitoring system for an aircraft navigation system

Details Integrity monitoring system for an aircraft navigation system Integrity monitoring system for an aircraft navigation system

1977-08-31

1979-02-06

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5LS, G01S 740

Patent

active

041386787

ABSTRACT:
An integrity monitor includes means at the ground station for periodically transmitting an integrity test signal comprising a coded first portion which identifies the signal and a coded second portion which is equivalent to a predetermined quantity. The airborne station includes a decoder which determines the type of test signal received and decodes the second portion to obtain a number which, if the system is operating properly, will compare favorably with a fixed reference. If the comparison is unfavorable, an alarm is sounded.

REFERENCES:
patent: 3195132 (1965-07-01), Battle et al.
patent: 3248729 (1966-04-01), Howard et al.
patent: 3312972 (1967-04-01), Alitz
patent: 3924341 (1975-12-01), Edelsohn

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