Design And Implementation Of Airspace Radio Monitoring System Based On UAV

The airspace radio monitoring method based on unmanned aerial vehicle(UAV)is a new monitoring method in recent years.The method is carried by the UAV to carry the monitoring and receiving equipment for radio monitoring,which can effectively avoid the multipath fading of the radio signal in the propagation process,so as to improve the efficiency of radio investigation.The design of monitoring receiving equipment and ground monitoring terminal in UAV monitoring system is still a research hotspot.Focusing on the online and offline application scenarios of airspace radio monitoring,this thesis aims to design a portable and easy-to-operate airspace radio monitoring system based on the software radio platform composed of Zynq-7000 So C and AD9361 RF chip.The main research contents are as follows :Based on the software radio platform,the airborne terminal design of airspace radio monitoring system is realized,focusing on the design of acquisition,preprocessing,transmission and continuous and intermittent storage.Acquisition based on AD9361 RF chip,preprocessing,transmission and storage is based on Zynq-7000,AD9361 and Zynq through the digital interface data interaction.The existing Lo Ra wireless transmission module and high-speed data transmission module are used for ground-to-air communication,and the radio monitoring is carried out at the ground end by monitoring software.In order to improve the operation efficiency of the system,a co-processing module is added to forward the data between Zynq and Lo Ra and UAV.In the ground terminal,the design of ground terminal monitoring software is mainly realized.Using Qt5.13 development tools and C + + programming language,the design of monitoring the working state of airborne system,online monitoring of airspace radio signals and location tracking function combined with signal analysis are realized.Finally,the overall test of the system.The performance of the airborne software radio platform is tested by analyzing the acquired data with MATLAB.Through the joint test of airborne and ground terminal functions,the test results verify the function of on-line and off-line radio signal monitoring.The usability and practicability of the system in radio monitoring are proved by the test of radio signal monitoring in airspace.This system provides a new solution for improving the efficiency of airspace radio interference screening.