Efficient ALL vs. ALL collision risk analyses

摘要

This paper describes the different changes implemented in a conjunction assessment and collision risk evaluation tool with the aim of reducing drastically the computational cost to ensure that a scenario where all space debris objects are analyzed against each other can be carried out in a short period of time. Improvements at algorithm level and parallelization techniques are used to shorten the time needed for the process of conjunction assessment. In the case of the collision risk evaluation, an approach for the propagation of the state covariance is presented based on the Simplified General Perturbations theory commonly used to propagate Two Line Elements.