Anti-exploitation method and apparatus for controlling aircraft

Details Anti-exploitation method and apparatus for controlling aircraft Anti-exploitation method and apparatus for controlling aircraft

1981-11-12

1993-06-29

Tubbesing, T. H.

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

Radar ew

342 45, G01S 1378

Patent

active

052238377

ABSTRACT:
A method and apparatus for preventing unauthorized sources from utilizing rcraft-borne I.F.F. for locating same. A bypass switch is inserted in the I.F.F. transponder antenna line which normally sends all incoming signals into a dummy load. Upon receipt of a proper interrogate command, the antenna is switched to the transponder.

REFERENCES:
patent: 3750163 (1973-07-01), Hecker
patent: 3905035 (1975-09-01), Krumboltz et al.
patent: 4075631 (1978-02-01), Dumez
patent: 4322729 (1982-03-01), Honold et al.
patent: 4566009 (1986-01-01), Hanni et al.
patent: 4862176 (1989-08-01), Voles
patent: 5101208 (1992-03-01), Parker et al.

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