Unmanned aerial vehicle (UAV) navigation deception defense is an advanced technology used for defending, controlling or capturing UAVs. It mainly generates false signals with the same frequency and time synchronization as the positioning coding signals of real navigation satellites through simulation, and injects the guidance information into the navigation system of unmanned aircraft, thereby achieving multiple tactical functions such as no-fly, driving away or trajectory guidance of UAVs. The following is a detailed explanation of the defense against drone navigation deception:
First, technical principles
The unmanned aerial vehicle (UAV) navigation deception defense system can perform various calculations and inferences of satellite orbits, satellite clock differences, distance delays, ionospheric errors, tropospheric errors, etc. for satellite navigation systems such as GPS, GLONASS, and Beidou, and generate corresponding satellite orbits, navigation messages, and observation data, etc. By transmitting these false or interfering signals, the system can deceive the navigation system of the unmanned aerial vehicle, causing it to mislead or lose its way.
Second, main functions
No-fly function: In certain sensitive areas, such as the airport's clear zone, the system can send false signals to misjudge the drone as a no-fly area, thereby forcing it to land automatically or return to the take-off point.
Eviction function: When an unauthorized drone is detected, the system can guide the drone to the preset eviction area through induction information, thereby achieving effective control of the drone.
Trajectory guidance function: The system can generate specific false trajectory information to guide the unmanned aerial vehicle (UAV) to fly along the preset route, thereby achieving remote control and monitoring of the UAV.
Third, advantages and characteristics
Non-contact defense: Compared with traditional methods such as contact capture, suppression interference, and laser shooting down, the unmanned aerial vehicle (UAV) navigation deception defense system adopts a deception working principle. It drives away or defuses the UAV by sending low-power deception signals, avoiding the damage and risks that may be caused by physical contact.
Minimal impact on the surrounding area: The intensity of the spoofing signal output by the system is controllable, effectively ensuring that it does not interfere with the normal operation of other navigation systems outside the protected area, and at the same time, it does not cause radiation harm to the human body.
All-weather defense: The system can be deployed in specific protection areas. Users can rationally set up single or multiple defense base stations based on the size and environment of the defense area they need to build an all-weather no-fly protection zone for unmanned aerial vehicles.
Fourth, application scenarios
The unmanned aerial vehicle (UAV) navigation deception defense system has been successfully applied in multiple scenarios, such as airports, large-scale event sites, prisons, etc. At the airport, this system can effectively prevent drones from "flying illegally" into the clear zone, ensuring the safe takeoff and landing of aircraft. In sensitive areas such as large-scale event sites and prisons, this system can also effectively prevent drones from engaging in threatening behaviors such as illegal photography and throwing objects.
