Intelligence-Based Multistage Optimization Framework for Multiple Debris Removal Mission

TL;DR: The LEGEND (LEO-to-GEO Environment Debris model) is a high-fidelity three-dimensional physical model developed by the U.S. National Aeronautics and Space Administration (NASA) that is capable of simulating the historical environment and the evolution of future debris populations as discussed by the authors.

TL;DR: In this article, the authors review the current status of these activities and give a status of where we stand, of the cooperation with the international partners, and raises the questions which remain open and have to be dealt with in the coming months.

TL;DR: In this paper, the authors presented a comprehensive study based on more realistic simulation scenarios, including fragments generated from the 2007 Fengyun-1C event, mitigation measures, and other target selection options.

TL;DR: In this article, a new study has been conducted in the Orbital Debris Program Office at the NASA Lyndon B. Johnson Space Center, using higher fidelity models to evaluate the current debris environment.