Multi-interference source direction finding and positioning technology for satellite navigation and its application
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摘要: 针对导航对抗环境下干扰源等难以检测和排查的问题，给出了卫星导航干扰源空地协同测向定位系统设计方案和干扰源查找流程，对该系统采用的空间谱估计和相关干涉仪结合的多干扰源测向技术进行了仿真分析，对该系统进行了实际的测试验证. 测试结果表明：车载干扰测向定位系统可同时测向的同频多干扰源数量为4个，测向均方根误差(RMSE)精度为1.4°，系统定位精度为5%，在R以内(R为干扰源与检测点之间的距离)，可以满足实际使用需求.Abstract: Aiming at the problems that are difficult to detect and find in the navigation countermeasures environment, this paper presents the design scheme and interference source search process of the satellite navigation interference source air-ground cooperative direction finding and positioning system, and conducts simulation analysis on the interference detection technology used in the system, improved spatial spectrum estimation and multi-interference source direction finding technology combined with correlation interferometer. The system is tested and verified in practice. The actual test results show that the system can simultaneously detect the number of multiple interference sources of the same frequency is 4, the direction finding accuracy is 1.4 degrees (root mean square error), the system positioning accuracy is less than 5%R (R is the distance between the interference source and the monitoring point), can meet the actual use requirements.
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表 1 卫星导航干扰源干扰定位精度
序号 干扰信号
类型干扰源定位
结果/(°)干扰源定位
误差/m定位精度 1 窄带 118.838 317
37.446 991139.4 4.66%R 2 宽带 118.837 202
37.446 714141.5 4.72%R 3 脉冲 118.837 144
37.446 709142.6 4.76%R 
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