Unmanned aerial vehicle operator positioning system and method based on aerial radio monitoring platform

Abstract

The invention discloses an unmanned aerial vehicle operator positioning system and method based on an aerial radio monitoring platform and belongs to the technical field of radio direction finding andpositioning. The unmanned aerial vehicle operator positioning system comprises an airborne direction finding system and a ground control system; the airborne direction finding system is used for measuring the direction of arrival from the maximum energy of a target signal to determine a position; the ground control system is used for remotely controlling the airborne direction finding system andthe aerial monitoring platform to obtain a positioning result in real time. The airborne direction finding system is used for acquiring and compressing the target signal, performing frequency hoppingsignal extraction and matching an azimuth angle, a GPS position and time information, and a frequency hopping signal in real time; the ground control system is used for controlling the aerial radio monitoring platform to change postures in air, so that the airborne direction finding system determines the direction of arrival from the maximum energy of the target signal. The unmanned aerial vehicleoperator positioning system and method based on the aerial radio monitoring platform, disclosed by the invention, are suitable for an area where multi-point ground monitoring equipment is unconditionally erected in a complex urban environment, save labor and capitals, and realize wide-frequency band, omni-directional and high-precision spatial positioning of the remote frequency hopping signal.

Description

technical field [0001] The invention belongs to the technical field of radio direction finding and positioning, and relates to a positioning method for a drone operator, in particular to a ground remote control frequency hopping signal positioning system and method for a drone based on an aerial radio monitoring platform. Background technique [0002] With the maturity of drone technology and the vigorous development of consumer drones, the extensive use of drones has also brought some safety hazards, especially the "black flight" incidents have been repeatedly banned, which not only seriously disrupted air traffic order, but also endangered aviation. Safety also poses a security threat to the lives and property of the people. It can be said that drone control is imperative. As the national radio management department, it is necessary to effectively supervise the "black flight" of UAVs in terms of radio security. It is necessary to quickly discover and identify "unknown" UAV...

AI Technical Summary

Problems solved by technology

[0007] (1) In a complex urban environment, obstacles will cause multipath and non-line-of-sight conditions during the propagation of the remote control signal, which will greatly reduce the measurement accuracy of parameters such as TDOA or AOA, and seriously restrict the positioning of existing ground monitoring equipment. ability;

[0008] (2) The positioning technology based on ground monitoring equipment is currently mainly used for monitoring and positioning of frequently sent signals. The ability to accurately capture and measure parameters for the fast frequency-hopping signals emitted by the remote control of the UAV is limited, which seriously affects the positioning accuracy.

[0009] (3) The ground monitoring and positioning system needs to be erected at multiple points, and the position is relatively fixed. It cannot flexibly complete the positioning task of the emission source in different areas, and the emergency maneuverability is poor.

[0010] (4) The ground monitoring and positioning system is large in size, complex in structure and high in economic cost

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