无人机欺骗干扰源设计实现

Design and implementation of UAV deception interference source

为了进一步对非授权无人机进入特定空域前实行有效管控,设计并研制一款小型化便携式的无人机欺骗干扰源:建立生成式欺骗干扰源的信号模型,并给出各参数的计算方法;介绍欺骗干扰源的总体设计与关键技术;基于数字信号处理芯片和现场可编程逻辑门阵列的架构,实现欺骗信号参数计算与基带信号生成,并通过射频模块完成欺骗信号的射频输出;然后介绍干扰源时间同步方法,依托内置接收机提供与真实卫星信号同步的基准时钟和秒脉冲信号,实现本地时与系统时的同步;定性给出2种欺骗信号功率调整策略,俘获目标接收机跟踪环路;最后使用接收机和无人机测试欺骗干扰源的功能完备性。结果表明,欺骗干扰源能够实现对商用接收机和无人机诱导管制。

In order to further implement effective control on unauthorized unmanned aerial vehicle(UAV)before entering specific airspace,the paper designed and developed a miniaturized and portable UAV deception interference source:the signal model of the generative deception interference source was established,and the calculation method of each parameter was given;the overall design and key technology of the deception interference source was introduced;based on the architecture of digital signal processor(DSP)and field programmable gate array(FPGA),the calculation of the deception signal parameters and the generation of the baseband signal were realized,and the radio frequency output of the spoofed signal was completed through the radio frequency module;the time synchronization method of the interference source was introduced then,and local time and system time were synchronized by relying on the built-in receiver to provide pulse per second signal and 10 MHz clock signal synchronized with the real satellite signal;next,two spoofing signal power adjustment strategies were qualitatively given to capture the target receiver tracking loop;finally,the receiver and UAV were used to test the functional completeness of the deception interference source.Results showed that the proposed deception interference source could induce control on commercial receivers and unmanned aerial vehicles.