摘要
针对空中飞行器组合导航滤波计算量大的问题,提出了基于计算需求的变比率信息处理组合导航滤波校正方法。该方法将整个滤波过程分为前段滤波和后段滤波、预测与校正等几个环节,并利用最小二乘法对数据进行预测和校正。对全系统进行了数值仿真,仿真结果表明:该方法能够有效减小组合导航系统的计算量,并且能够保证滤波精度,可实现与空中飞行器导航计算同等周期的误差校正,具有计算量小,数据精度高等优点。
Against the problem of the huge computation of air vehicle integrated navigation filtering,a calibra-tion method for integrated navigation filtering based on variable ratio information processing is proposed.Ac-cording to this method,the filtering process is divided into front filtering a,back filtering prediction and calibra-tion,and the data is predicted and calibrated by using least square method.The result of the numerical simula-tion of the total system shows that this method can efficiently decrease calculation quantity of the integrated nav-igation system with guaranteeing the filtering accuracy,and can realize the error calibration which is of the same cycle with air vehicle navigation calibration.This method features the advantage of small computation amount and high data accuracy.
出处
《探测与控制学报》
CSCD
北大核心
2015年第5期31-34,39,共5页
Journal of Detection & Control
关键词
组合导航
滤波校正
变比率
integrated navigation
filtering calibration
variable ratio
