Title: Integrity monitoring system for an aircraft navigation system

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.

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Inventors: Kirner, Ernest O. (Coral Springs, FL, US)

Application Number: 829412
Filing Date: 1977-08-31
Publication_date: 1979-02-06
Assignee: The Bendix Corporation (Southfield, MI)
Primary Class(es): 342/173 342/169
Other Classes:
US Patent Ref:

3195132	Jul, 1965	Battle et al.	343/17.
3248729	Apr, 1966	Howard et al.	343/17.
3312972	Apr, 1967	Alitz	343/17.
3924341	Dec, 1975	Edelsohn	343/17.

Other Refs:
Primary Examiner: Tubbesing, T.H.
Assistant Examiner:
Attorney: Christoforo; W. G., Lamb; B. L.