标题： 从低地球轨道可能破裂事件中估计威胁等级 显示英文标题

标题： Threat Level Estimation From Possible Break-Up Events In LEO

摘要： NASA标准破碎模型模拟太空中的碰撞和爆炸，确定碎片的未来分布。 给定一个可能的破碎事件，本研究分析由产生的碎片对资产航天器轨道构成的威胁。 利用$J_2$扰动二体动力学的Koopman算子解，根据其速度对所有穿过资产路径的可能轨道进行识别和参数化。 在考虑破碎模型速度与Koopman转移解之间的交集的情况下，评估对资产的碰撞威胁等级。 显示英文摘要

摘要： The NASA Standard Break-Up Model models collisions and explosions in space, which identifies the future distribution of debris. Given a possible break-up event, this work analyses the threat posed by the generated debris in the orbit of an asset spacecraft. Using the Koopman Operator solution of the $J_2$ perturbed two-body dynamics, the family of all possible orbits that cross the asset's pathway is identified and parameterized according to their velocity. The threat level assessment of a collision onto the asset is estimated considering the intersection between the velocities of the break-up model and the Koopman transfer solutions.