基于雷达的导航信息传递系统设计

Design of navigation information transfer system based on radar

针对无人机低精度微惯导系统的动态对准和校准的问题,提出了一种基于雷达的母子导航信息传递系统。将雷达及其载体当作一个刚体,设计了基于雷达的母子导航信息传递系统结构;采用雷达被动测向仪和快速求根的对称压缩测向改进算法,对雷达主瓣波达方向(DOA)进行了估计;基于SystemVue,构建了基于雷达的导航信息传递仿真实验系统。仿真结果表明,基于雷达的方位传递误差≤0.5°,可以满足无人机微惯导系统初始对准和校准精度的要求以及无人机飞行和执行任务的需要。

Aiming at the problems of initial alignment and calibration for the low precision micro-inertial navigation system of UAV,a master-sub navigation information transfer system based on radar is proposed.The radar and its carrier are regarded as a rigid body and the navigation information transfer system structure based on radar is designed.By the radar passive direction finder and the improved algorithm of Root-MSCS,the direction of arrival(DOA)of the radar main lobe is calculated;the simulation experiment system of the navigation information transfer of radar is built based on SystemVue.The simulation results show that the azimuth transfer error based on radar is not more than 0.5°,which satisfies the precision request of initial alignment and calibration for the low precision micro-inertial navigation system of UAV and the need of flying task of UAV.