Navigation decoy system and method for coexistence unmanned aerial vehicle

Abstract

The invention provides a navigation decoy system and method for a coexistence unmanned aerial vehicle. The decoy system comprises a satellite search system, a cheat signal generation control system and a signal transmission system. The satellite search system is used for receiving and parsing a true satellite signal, and parsed result data is transmitted to the cheat signal generation control system; the cheat signal generation control system is used for calculating related parameters and generating a cheat signal; the signal transmission system sends the cheat signal generated by the cheat signal generation control system to a target unmanned aerial vehicle, and a receiver of the target unmanned aerial vehicle captures and tracks the cheat signal and the true satellite signal at the sametime; the cheat signal generation control system increases the power of the cheat signal to remove the true signal and controls a tracking loop of the target unmanned aerial vehicle. According to thenavigation decoy system and method, a synchronous false satellite is generated and coexists in the target receiver with a sky satellite, the power of the cheat signal is gradually increased after coexistence, the processed noise basis of the receiver is increased, and the output signal-to-noise ratio of the true signal in a correlator of the receiver is lowered; by relying on the power advantage of the cheat signal, the true signal is gradually removed out of the tracking loop, then the tracking loop is controlled, and cheat for the flight direction and speed of the black-flight unmanned aerial vehicle is achieved.

Description

technical field [0001] The invention belongs to the technical field of navigation attack and defense, and in particular relates to a co-existing unmanned aerial vehicle navigation deception system and method. Background technique [0002] In recent years, the UAV industry has developed rapidly, and the application of UAVs has exploded in both military and civilian fields. Several incidents of black-flying drones interfering with flight flights have resulted in alternate landings, hundreds of flight delays, and tens of thousands of passengers being blocked and stranded at the airport. Therefore, from the perspectives of urban airspace security, terrorism prevention, and maintenance of public security, it is urgent to take strong control measures against black-flying or malicious black-flying UAVs. [0003] At present, most of the interference control methods for Heifei UAVs currently use high-power radio suppression interference methods, because this method is simple to oper...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a method and system for realizing fast access to the induction signal of the b

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