Research/Patents/US 5223837
US 5223837

ANTI-EXPLOITATION METHOD AND APPARATUS FOR CONTROLLING AIRCRAFT IFF

Assignee

ARMY, THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE

Filed

Nov 12, 1981

Granted

Jun 29, 1993

Location

OCEAN NJ US

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.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 1, 1983

Rescinded

Sep 14, 1992

Duration

9 years

Inventor

  • 1SIDNEY J. GROSSMAN

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records