对低慢小无人机的干扰技术研究

Jamming technique of low-altitude low-speed small unmanned aircraft vehicle

通过对大疆公司系列低慢小无人机的通信信号特征研究,引入无人机跳频链路信号的检测与分析方法。研究了如何通过非线性时频分析方法,来获得无人机上下行通信链路的技术体制、信号传输频段、信号带宽、跳频规律等信号属性,实现了对无人机跳频通信信号的快速检测和识别。最后,针对无人机跳频通信信号,通过构建跳频通信系统的仿真传输模型,提出了几种干扰样式的设计方法,并对每种干扰样式的效果进行仿真测试比对,最终得出出高效的干扰样式。

In this paper,the detection and analysis methods of UAVs communication hopping link signals are introduced by the communication signals of low-altitude low-speed small UAV of DJI series products studied.This paper studies how to obtain the technology system of uplink and downlink communication link signals,band of signals transmission,signals bandwidth and frequency hopping rules through nonlinear time-frequency analysis method,and realizes the rapid detection and recognition of UAVs frequency hopping communication signals.At the last,aiming at the UAVs frequency hopping communication signals,by constructing the simulation transmission model of frequency hopping communication system,the design method of several jamming styles is proposed,and the effect of each jamming style is simulated and tested,and finally the efficient jamming style is obtained.