基于相位干涉法的反无人机系统的测向原理

Direction Finding Principle of Anti-UAV System Based on Phase Interferometry

随着商用小型无人机的普及,违法使用无人机造成的社会危害越来越被相关部门重视,反无人机系统也呼之欲出。比幅测向法是反无人机系统常规的测向方法,但测向精度不高。介绍了利用各天线阵之间的相位差实现高精度测向。首先推导了相位法测向的原理,然后利用MATLAB对算法进行了仿真,并实际采集无人机信号验证了该方法的正确性。

With the popularity of commercial small unmanned aerial vehicles(UAVs),the social harm caused by the illegal use of UAVs has been paid more and more attention by relevant departments,and anti-UAV system is also on the horizon.The amplitude comparison direction finding method is a conventional direction finding method for the anti-UAV system,but the direction finding accuracy of this method is not high.This paper introduces how to use the phase difference among each antenna array for high-precision direction finding.This paper firstly deduces the principle of direction finding by phase method,then simulates the algorithm by MATLAB,and collects the UAV signals to verify the correctness of this method.