ARMA模型在光纤陀螺惯导系统寻北中的应用  

Applications of ARMA Model in the FOG Inertial Navigation System North Seeker

作　　者：白俊卿[1] 张科[1] 卫育新 

机构地区：[1]西北工业大学,西安710072 [2]航天16所,西安710100

出　　处：《计算机与数字工程》2012年第8期42-44,共3页Computer & Digital Engineering

基　　金：航天支撑基金(编号:NAXW0006)资助

摘　　要：在光纤陀螺捷联惯导系统寻北过程中,光纤陀螺的随机漂移是影响其精度的重要因素。论文提出了一种建立三阶自回归模型AR(3)方法,实现了高精度FOG捷联惯导系统静态输出信号的在线建模,并采用强跟踪卡尔曼滤波技术进行误差的实时滤波。寻北试验结果表明,寻北精度有了明显的提高,从而验证了方法的可行性,具有工程实用性。The optical fiber gyro random drift is the important factor of influence aiming accuracy in the north seeker of the inertial navigation system.A third-order model is established and an algorithm is given to achieve high-precision of output.The on-line modeling is realized and the strong tracking filter is used to achieve the Real-time filtering.By the north seeker test,the north seeker accuracy has been significantly improved.It is feasibility and practicality for the engineering practicality.

关 键 词：光纤陀螺捷联惯导系统 在线建模 实时滤波 寻北 

分 类 号：U666.1[交通运输工程—船舶及航道工程]