基于无人机小阵列天线GNSS干扰源定位方法

GNSS interference source location method based on unmanned aerial vehicles small array antenna

针对城市复杂环境中的干扰源定位问题,提出了利用无人机携带小阵列天线对干扰源进行定位的方法.为解决解算干扰来向过程中小阵列天线存在角度模糊的现象,需利用无人机对其携带的两根接收天线进行旋转;旋转一周后,利用其变化率信息结合无人机方位角数据,得到无人机指向干扰源的角度(即干扰来向);最后利用最小二乘定位法进行位置解算,并将定位结果显示在卫星图上.实验结果表明,本文定位方法的相对定位误差均保持在5%以内,从而验证了无人机小阵列天线对干扰源定位的方法具有可行性和鲁棒性.

Aiming at the location of interference sources in complex urban environment,a method of position-ing interference sources by using unmanned aerial vehicle(UAV)to carry small array antenna is proposed.In or-der to solve the problem of angle ambiguity in small array antenna in the process of calculating the direction of in-terference source,the UAV is needed to rotate the two receiving antennas it carries.After one revolution of the two antennas,the angle at which the UAV points to the interference source(i.e.,the direction of interference source)is obtained by combining the information of their change rate with the UAV azimuth data.Finally,the least square positioning method is used to solve the position,and the positioning results are displayed on the satel-lite map.The experimental results show that the relative positioning errors of the positioning method proposed in this paper are maintained within 5%,thus verifying the feasibility and robustness of the method for locating the in-terference source with UAV small array antenna.