无人机GPS欺骗干扰方法及诱导模型的研究

GPS Spoofing and Inducing Model of UAV

GPS是无人机成功飞行的关键支持。针对无人机事故频发的现状,分析GPS欺骗干扰原理,给出了一种基于软件无线电(SDR)设备的产生式欺骗干扰解决方案。该方案阐述了GPS欺骗信号的产生流程,通过SDR设备上变频发送自主产生的欺骗信号,实现了对GPS接收机静态位置和动态位置的欺骗。经实验测试,该方案性能稳定,接收机可精准定位在欺骗位置。此外,详细阐述了一种无人机欺骗诱导模型,给出了偏移速率的计算方法,理论上证实了将无人机欺骗至特定点的可能性。

GPS is the key support to the successful flight of UAV. Considering the situation of frequent accidents caused by UAVs, the principle of GPS spoofing is analyzed, and a generated spoofing scheme based on SDR（Software Defined Radio） devices proposed. The generation process of GPS spoofing signal is expounded. This solution can realize both static and dynamic location spoofing of GPS receiver by up- converting and transmitting spoofing signals with SDR device. Experimental results indicate that this scheme is stable in performance, and the receiver can locate the deceptive location precisely. A model of UAV spoofing is described in detail, the computation of shifting rate also given, and this theoretically verifies thepossibility of spoofing UAV to a specific location.