多旋翼商用无人机价格低廉,应用广泛。在中东,伊斯兰国的恐怖分子将这种商用无人机用于侦察、监视和攻击。按说这类无人机的技术水平不高,性能也有限,但美国国防高级研究计划局却视其为严重的非对称威胁,并公开征集技术思路,以实现对作战人员的有效防护。 Multi-rotor commercial UAV low price, wide range of applications. In the Middle East, terrorists from Islamic State used such commercial drones for reconnaissance, surveillance and attack. According to the UAV technical level is not high, the performance is limited, but the US Defense Advanced Research Projects Agency regarded it as a serious threat of asymmetry and open solicitation of technical ideas in order to achieve effective protection of warfighters.