Method and system for preventing anti-aircraft warfare engagement with neutral aircraft
First Claim
1. A system for preventing engagement with a neutral aircraft, comprising:
- a detector that detects SSR (Secondary Surveillance Radar) interrogation signals generated by an aircraft, including detecting frequency of generation of said interrogation signals; and
a transponder that responds to said interrogation signals by generating corresponding response signals such that a time difference between a first time that said aircraft sends out said interrogation signal and receives said corresponding response signal, and a subsequent time that said aircraft sends out said interrogation signal and receives said corresponding response signal, decreases in time.
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Abstract
A method and system that prevents engagement with neutral aircraft utilizes secondary surveillance radar (SSR) in conjunction with traffic alert collision avoidance systems (TCAS) conventionally found on various commercial aircraft. The system and method provide for detecting interrogating signals sent out by a TCAS system of an interrogating aircraft searching for another aircraft that may pose a threat for collision. The system and method of the invention provide for a base system generating signals responsive to the interrogation signals such that there is a decreasing time difference between the interrogating signals and the responsive signals. The decreasing time difference indicates to the interrogating aircraft that another aircraft is approaching its airspace urging the neutral aircraft to change course and avoid entering a guarded tactical airspace thus avoiding unnecessary engagement of the aircraft.
14 Citations
27 Claims
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1. A system for preventing engagement with a neutral aircraft, comprising:
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a detector that detects SSR (Secondary Surveillance Radar) interrogation signals generated by an aircraft, including detecting frequency of generation of said interrogation signals; and a transponder that responds to said interrogation signals by generating corresponding response signals such that a time difference between a first time that said aircraft sends out said interrogation signal and receives said corresponding response signal, and a subsequent time that said aircraft sends out said interrogation signal and receives said corresponding response signal, decreases in time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for preventing engagement with a neutral aircraft, said method comprising:
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detecting SSR (Secondary Surveillance Radar) interrogation signals generated by an aircraft, including detecting a frequency of generation of said interrogation signals; and responding to said interrogation signals by generating corresponding response signals such that a time difference between a first time that said aircraft generates one said interrogation signal and receives said corresponding response signal, and a subsequent time that said aircraft sends out said interrogation signal and receives said corresponding response signal, decreases in time. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification