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当前无人机系统已广泛应用到各个行业,极大地丰富了各个行业的工作和人们的日常生活。当初用于娱乐目的的无人机日益用于其他用途,这包括:观察/扰乱公共活动、刺探保护区域、偷运违禁品到监狱、危及/威胁商用空中交通,以及进入限制空域。对抗此类无人机威胁的技术方法包括:监测相关信号频谱、识别频率捷变无线电控制信号、测向,以及可能的防御对策。1.无人机应用的趋势过去10年,民用和商用无线控制(RC)无人驾驶飞行器(UAV)的应用一直在稳定增长。早在2011年,相关研究
The current unmanned aerial vehicle system has been widely used in various industries, greatly enriched the work of various industries and people’s daily lives. UAVs originally used for recreational purposes were increasingly being used for other purposes, including observing / disrupting public activities, spying on protected areas, smuggling contraband into prisons, endangering / threatening commercial air traffic, and entering restricted airspace. Technical methods to counter such UAV threats include monitoring the relevant signal spectrum, identifying frequency agile radio control signals, direction finding, and possible defensive countermeasures. 1. Trends in UAV Applications The use of civilian and commercial wireless control (RC) unmanned aerial vehicles (UAVs) has been steadily increasing over the past decade. As early as 2011, related research