摘要
弹载惯性制导系统空中对准是机载战术导弹发射前必须完成的任务,其对准精度直接影响导弹系统的制导精度。利用最优平滑技术对弹载惯导系统传递对准效果进行评估,是分析导弹系统的战术性能和惯导系统自身器件性能的有效方法。Rauch-Tung-Striebel(1965)提出了固定区间平滑算法,Meditch(1967)提出了固定点平滑算法;Bierman(1983)、Watamabe(1989)等许多学者对RTS算法提出了改进方法,这些方法在保证平滑算法中数值的稳定性和提高计算效率方面有了明显改善。针对固定区间平滑算法所适应的对象,分析了这类平滑算法的特点,提出了RTS固定区间平滑算法的改进方法;结合弹载惯性制导系统传递对准效果评估,进一步证明了分析的正确性。
Before launching an airborne inertial guided tactical missile, in-flight alignment must be finished for its Inertial Navigation System (INS),and the accuracy of the in-flight alignment affects the missile guidance precision directly. In this paper ,optimal smoothing is applied to the problem of the testing and evaluation of in-flight alignment accuracy of INS. Fixed-interval somoother is proposed by RauchTung-Striebel(1965,and then the improved methods of fixed-interval sommother are proposed by Bierman (1983),Watanabe(1989),etc. In order to get high numerical stability and comprtational efficiency, the property of fixed-interval smoother is analyzed, and the improved algorithm arc proposed. The new smoothing algorithm is used to testing and evaluation of INS transfer alignment, test results show the effectiveness of the presented algorithm.
出处
《火力与指挥控制》
CSCD
北大核心
2005年第4期20-23,共4页
Fire Control & Command Control
基金
航空科研合作项目
关键词
卡尔曼滤波
固定区间平滑算法
弹载惯导系统
传递对准
Kalman filter, fixed-interval smoother, missile-carry inertial guidance system,transfer alignment