弹道学报2024，Vol.36Issue(4)：97-103,7.DOI:10.12115/j.issn.1004-499X(2024)04-012
基于两种基函数表征的外弹道数据融合方法比较分析
Comparison and Analysis of External Ballistics Data Fusion Methods Characterized by Two Basis Functions
宫志华 1刘洋 1段鹏伟 1陈春江1
作者信息
- 1. 中国人民解放军63861部队,吉林白城 137001
- 折叠
摘要
Abstract
The error model best estimation of trajectory(EMBET)based on the constraint of basis function is an important method for post-mission high-precision data processing of external ballistics.It is significant to choose an appropriate basis function for obtaining ballistic parameters and analyzing ballistic characteristics effectively and accurately.To explore the effect of basis function on the accuracy and efficiency of data fusion for external trajectory data,the EMBET data fusion methods characterized by cubic B-Spline basis function and two-point cubic Hermite basis function were compared and analyzed.Firstly,the trajectory was characterized by two basis functions.Therefore,the data fusion for trajectory measurement data was transformed into the estimation of basis function coefficients.Thus,the fusion model of external trajectory was solved.Combining the theoretical ballistic characteristics of weapon systems,the data fusion methods based on the two basis-functions were simulated and compared through fusion instance.The accuracy was also compared and analyzed according to the ballistic coordinate,ballistic velocity and error detection of measurement elements.The simulation results show that,under the same conditions,both of the data fusion methods based on the two basis functions can achieve high-precision external ballistics coordinate parameters.But the data fusion method based on the basis function of B-Spline is more advantageous in compression of estimated parameters and calculation efficiency.Furthermore,the calculation accuracy of its ballistics velocity parameters is higher than that of the other method.关键词
外弹道/误差模型最佳弹道估计/基函数/误差模型/数据融合/待估参数Key words
external ballistics/EMBET/basis function/error model/data fusion/estimated parameter分类
信息技术与安全科学引用本文复制引用
宫志华,刘洋,段鹏伟,陈春江..基于两种基函数表征的外弹道数据融合方法比较分析[J].弹道学报,2024,36(4):97-103,7.
