样条约束的EMBET中最优化问题与算法改进  

Optimization Issue in EMBET with Spline Constraint and Its Improvement in Numerical Algorithm

作　　者：陈伟玉[1] 陈伟利[2] 叶正茂[2] 

机构地区：[1]北京航天指挥控制中心,北京,100720 [2]太原卫星发射中心,技术部,太原,030027

出　　处：《装备指挥技术学院学报》2002年第4期86-89,共4页Journal of the Academy of Equipment Command & Technology

摘　　要：针对样条约束的EMBET方法中原有最优化算法的不足,提出应用阻尼最小二乘法且在其下降方向上加入一维搜索的改进方案.试算结果表明:改进后的算法在收敛性、稳定性和结果的最优程度方面都好于原有算法.To compute traijectory and estimate system error using EMBET(Error Model Best Estimate of Trajectory) method with spline constraint is to solve an optimization issue without constraint in fact. With regard to shortcomings in the original limit value algorithm of EMBET method with spline constraint, this paper proposes an improved scheme and the trial results show that the improved algorithm is better than the original one in aspects of convergence and optimized degree of results.

关 键 词：样条约束 EMBET 算法 无约束最优化 指标函数 一维搜索 病态矩阵 条件数 弹道学 

分 类 号：O315[理学—一般力学与力学基础]