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Global Sensitivity Analysis of Earth-Moon Transfer Orbit Parameters Based on Sobol Method
International Journal of Aerospace Engineering ( IF 1.4 ) Pub Date : 2022-05-29 , DOI: 10.1155/2022/6587890
Qi Wang 1, 2 , Haiyang Li 1, 2 , Lin Lu 1, 2 , Luyi Yang 1, 2 , Shenquan Wang 3
Affiliation  

In the process of Earth-Moon transfer orbit, many parameters are involved and the degree of influence varies among the parameters. How to accurately distinguish the influence relationship between different parameters is of great significance to engineering missions. Based on Sobol sequence sampling method and Sobol global sensitivity analysis method, a calculation process of global sensitivity analysis is proposed in this paper for high-fidelity Earth-Moon transfer orbit. A numerical simulation method is used to verify that the Sobol sequence sampling method has better convergence and higher precision than other sampling methods and has better adaptability in global sensitivity analysis. The effects of different state parameters and the combination of different parameters on the perilune parameters of Earth-Moon transfer orbit are given by simulation examples, which verifies the effectiveness and feasibility of the calculation process proposed in this paper. Simulation results show that the radial position and tangential velocity at the trans-lunar injection point are the main sensitivity parameters, and the other parameters have little effect on the results. The sensitivity of the orbital elements at the trans-lunar injection point to the perilune parameters is different and needs to be determined according to the specific parameters. The results of this study can provide important reference for future Earth-Moon transfer orbit design and related engineering missions.

中文翻译:

基于Sobol法的地月转移轨道参数全局敏感性分析

在地月转移轨道过程中,涉及的参数较多,各参数的影响程度不同。如何准确区分不同参数之间的影响关系,对工程任务具有重要意义。本文基于Sobol序列采样法和Sobol全局灵敏度分析方法,提出了一种高保真地月转移轨道全局灵敏度分析计算流程。采用数值模拟方法验证了Sobol序列采样方法比其他采样方法具有更好的收敛性和更高的精度,在全局灵敏度分析中具有更好的适应性。通过仿真算例给出了不同状态参数和不同参数组合对地月转移轨道近月参数的影响,验证了本文提出的计算过程的有效性和可行性。仿真结果表明,跨月注入点的径向位置和切向速度是主要的灵敏度参数,其他参数对结果影响不大。跨月注入点的轨道元素对近月参数的敏感性不同,需要根据具体参数来确定。该研究成果可为未来地月转移轨道设计及相关工程任务提供重要参考。验证了本文提出的计算过程的有效性和可行性。仿真结果表明,跨月注入点的径向位置和切向速度是主要的灵敏度参数,其他参数对结果影响不大。跨月注入点的轨道元素对近月参数的敏感性不同,需要根据具体参数来确定。该研究成果可为未来地月转移轨道设计及相关工程任务提供重要参考。验证了本文提出的计算过程的有效性和可行性。仿真结果表明,跨月注入点的径向位置和切向速度是主要的灵敏度参数,其他参数对结果影响不大。跨月注入点的轨道元素对近月参数的敏感性不同,需要根据具体参数来确定。该研究成果可为未来地月转移轨道设计及相关工程任务提供重要参考。其他参数对结果影响不大。跨月注入点的轨道元素对近月参数的敏感性不同,需要根据具体参数来确定。该研究成果可为未来地月转移轨道设计及相关工程任务提供重要参考。其他参数对结果影响不大。跨月注入点的轨道元素对近月参数的敏感性不同,需要根据具体参数来确定。该研究成果可为未来地月转移轨道设计及相关工程任务提供重要参考。
更新日期:2022-05-31
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