基于CR-MIMO的无人机多域联合分集抗干扰方案

针对无人机遥控链路常受到干扰导致其性能下降或失锁,提出了基于认知多输入多输出(multiple input multiple output, MIMO)的无人机遥控链路,结合认知无线电,构建了集时域、频域、空域以及码域于一体的多域联合无人机智能抗干扰体制,包含了时间、频率、空间以及码元等多种分集技术。理论分析以及系统仿真表明,在感知的基础上,频分以及码分可以实现对无人机遥控链路中常见的窄带以及宽带干扰的抑制;MIMO空时分集可以有效对抗遥控链路的自然干扰,从而对无人机抗干扰性能的提升具有实际意义。

Diversity anti-jamming scheme of UAV multi-domain united based on CR-MIMO

The remote control link of unmanned aerial vehicle(UAV)is often cluttered by interference which results in performance degradation or losing lock. The UAV remote control link of cognitive multiple input multiple output (MIMO) is presented. And the time frequent space code domain into UAV intelligent anti-jamming system is set up with congnitive radio. Many diversity such as time diversity, frequent diversity, space diversity and code diversity techniques are contained. The theoretical analysis and system simulation shown that the frequent diversity and code diversity can restrain the common narrowband and broadband interference of UAV remote control link based on the cognitive radio. And also the natural interference is restrained by MIMO space time diversity effectively. So it shows practical application value on the performance improvement of UAV anti-jamming.