Time selection array system applied to detection and positioning of unmanned aerial vehicle and flight control source

Abstract

The invention provides a time selection array system applied to detection and positioning of an unmanned aerial vehicle and a flight control source, and belongs to the technical field of unmanned aerial vehicle detection. The system comprises a direction finding station and a ground control center, wherein the direction finding station comprises a time selection array antenna module, a radio frequency link module and a digital signal processing module; the time selection array antenna module comprises an antenna unit and a power distribution link; the radio frequency link comprises a mixer, a power amplifier, a filter and a digital-to-analog converter ADC device. The digital signal processing module comprises a signal rearrangement module, an FFT conversion module, a spectrum analysis module and a multi-signal classification algorithm module; and the central station receives the direction finding result of the direction finding station and solves the orientations of the unmanned aerial vehicle and the flight control source. According to the method, a time selection array is adopted, and position information of the unmanned aerial vehicle and a flight control source is determined by capturing flight control image transmission signals of the unmanned aerial vehicle and the flight control source; by means of signal rearrangement, false spectrum peaks generated when a modulation antenna array carries out a multi-user classification algorithm are solved.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle detection, relates to unmanned aerial vehicle detection technology, in particular to a time modulation array direction finding system applied to unmanned aerial vehicle detection. Background technique [0002] With the rapid development of unmanned aerial vehicle (UAV) activities in the air, work on the safety and control of UAV systems has been carried out at home and abroad. All developed countries in the aviation industry have listed the integration of UAV systems into the national airspace system as a national priority. The safety of UAV systems is the focus of public safety and air transportation. Especially in recent years, the phenomenon of "black flying" of UAVs has become serious, and the phenomenon of threatening the safety of people's lives and property has occurred many times. The detection and countermeasures of UAVs, especially civilian UAVs, have become a hot researc...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned false spectral peaks of the time-selective array and poor multi-user classification ability, the present invention is difficult to apply to the actual system, and proposes a time-selective array system applied to the detection and positioning of unmanned aerial vehicles and flight control sources

Images