面对接近式威胁的在轨飞行器安全性分析方法

提出了一种针对非合作接近威胁飞行器的安全性分析方法，具备对多脉冲接近的威胁飞行器进行安全性分析的能力，所得结果可对自主规避决策提供支撑。文中给出了安全性分析流程，从能量约束等角度出发，选取脉冲冲量、交会时间以及最小相对距离三种参数作为安全性分析指标；随后对指标标准化，建立了多指标加权综合评价与决策模型。仿真结果表明，在本文模型下，非合作主动接近飞行器施加多脉冲机动变轨对目标器进行接近，其每次脉冲均会在安全性评价值中得到体现，算法可对脉冲真实意图进行准确判断。本文提出的安全性分析方法可推动空间复杂环境下卫星面对各种主动威胁时的安全性分析研究，对未来卫星防护体系及相关技术的研究具有一定参考意义。

Security Analysis Method of In Orbit Spacecraft Oriented to Approaching Threats

A method about security analysis for non-cooperative approaching spacecraft is proposed. The purpose of multi-impulse approaching spacecraft can be well analyzed. The results can support the decision of independent evasion. Firstly, the process of security analysis is given. From the view of energy constraints, impulse, rendezvous time and minimum relative distance are selected as the safety analysis index. Then, these indices are standardized, setting up a multi-index, weighted and comprehensive evaluation for a decision-making model. Under this model, the simulation shows that the non-cooperative active approaching vehicle can apply multiple impulses to change the orbit and approach the target. Each impulse applied by the non-cooperative active approaching vehicle will be reflected in the safety evaluation value, and the real intention of the impulse can be accurately estimated through the algorithm. The security analysis method proposed in this paper can not only promote the security analysis research of satellites in the complicated space environment when facing various active threats, but also provide a significant reference for future satellite protection system and related technology research.