摘要
无人机测控系统天线数字引导数据传输存在延时,使得天线无法准确跟踪飞行目标,链路不能稳定工作。针对这种时滞问题,通过对卡尔曼(Kalman)滤波算法的研究,提出在Kalman滤波同时上,采用平移多步预测外推的解决方法。给出了外推算法公式,分析了天线数引跟踪模型,据此进行了仿真。仿真结果表明:Kalman滤波平移预测可以实现实时多点数据外推。在工程应用中取得了预期效果。
Due to the time delay of antenna digital guidance data transference in TTC of UAV,flying target can not be tracked by the ground servo antenna,and communications link can not work reliable as well.In order to solve this time-delay problem,based on analyzing the Kalman filter,a solving method of Multi-step shifted Kalman filter extrapolation was proposed.The recursion formulation of this method is derived,and the model of antenna digital designation tracking was analyzed.acceding to above,The simulation research is finished under Matlab.the simulation results indicate that the real time multistep shifted Kalman filter extrapolation can be achieved with chosen filter’s parameters reasonably.Finally,Expected results are obtained in the engineering application.
出处
《无线电工程》
2010年第8期22-25,共4页
Radio Engineering
关键词
卡尔曼滤波
天线跟踪
数字引导
外推
Kalman filter
antenna tracking
digital guidance
extrapolation
