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Collision avoidance dynamics for optimal impulsive collision avoidance maneuvers

机译:最佳冲动碰撞避免动态的碰撞动力学

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This paper describes a method to calculate the optimal impulsive maneuver to avoid the collisions using Simplified General Perturbation 4 (SGP4) and Two Line Element (TLE). It also presents a rigorous analysis of the method to investigate the relative dynamics of the two colliding space objects assuming the encounter is instantaneous. Different collision geometries are used for test cases. For all collision geometries, the relative velocity and the relative miss distance vectors are parallel, which is the worst case because the encounter occurs along the direction of the relative velocity vector. Test cases are satellites with distinctive orbital characteristics that are obtained from the official Spacetrack catalog. A precise numerical orbit propagator is used both to create ephemerides for test cases and to evaluate the accuracy of the proposed method. This work is significant because this is the first comprehensive investigation of the relative dynamics of the optimal impulsive collision avoidance maneuvers for satellites. Moreover, the proposed method isn't compute-intensive because it is a semi-numerical method.
机译:本文介绍了一种计算最佳脉冲操纵的方法,以避免使用简化的通用扰动4(SGP4)和两个线元件(TLE)的碰撞。它还具有对研究两个碰撞空间对象的相对动态的方法严格分析,假设遭遇是瞬间的。不同的碰撞几何形状用于测试用例。对于所有碰撞几何形状,相对速度和相对错过距离矢量平行,这是最坏的情况,因为遇到沿着相对速度矢量的方向发生。测试用例是卫星,具有从官方空间的轨道目录中获得的独特轨道特征。使用精确的数控轨道传播器,用于创造出用于测试用例的明星苷,并评估所提出的方法的准确性。这项工作很大,因为这是第一次全面调查卫星最佳冲动碰撞避免机动的相对动态。此外,所提出的方法不是计算密集,因为它是一个半数学方法。

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