基于Lambert算法的脉冲精确变轨策略  

An Approach of Accurate Impulse Transfer Based on Lambert Algorithm

作　　者：桑艳[1] 周进[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2009年第3期29-32,共4页Journal of National University of Defense Technology

摘　　要：Lambert问题的求解多以二体假设为基础,从而对精确轨道控制带来不利影响。提出了一种脉冲修正策略,建立了考虑摄动影响的航天器轨道动力学计算模型,在Lambert算法基础上,通过拟牛顿法对变轨脉冲进行修正,消除终端状态误差,从而获得精确的变轨脉冲。将该修正策略用于固定时间精确变轨问题,建立了两层规划模型,并通过算例验证了算法的有效性。The solutions to Lambert problem are mostly based on two-body supposition, which may bring inconvenience to accurately control of orbital transfer. Therefore, an approach to amend the impulses of lambert transfer is presented. In terms of the perturbation, the precise dynamical model of spacecraft is established. Based on the result of Lambert algorithm, Quasi-Newton iterative method is employed to correct the impulses and reduce the errors of final state in orbital transfer. The approach is then used in the problem of timefixed accurate impulse transfer. Finally, a two hierarchical programming model is established to solve the problem, which was proved to be fight by an example.

关 键 词：轨道机动 脉冲精确变轨 Lambert算法 固定时间变轨 

分 类 号：V448.23[航空宇航科学与技术—飞行器设计]