中国空间科学技术2016，Vol.36Issue(4)：1-8,8.DOI:10.16708/j.cnki.1000-758X.2016.0046
空间物体解体碎片云的长期演化建模与分析
Model ing and analysis on the long-term evolution of the space debris cloud
摘要
Abstract
A space debris cloud consists of numerous breakup fragments which are originated from an instinct space object.As the breakup fragments are in a concentrated distribution, those spacecraft in the neighborhood of the breakup objects wi ll face a serious threat of collision. In order to evaluate the long-term evolution of space debris,the propagation of space debris cloud for a short-term period was analyzed numerically. Based on the stable distribution characteristic of the debris cloud, fragments were divided into several groups according to thei r orbital heights and area-mass ratios.The long-term distribution under the perturbation of atmosphere drag was described by an analytic evolution model. Comparing with all the fragments propagating individually,the analytic model was more efficient and less time-consuming.The evolution of a breakup debris cloud consists 1 780 breakup fragments,and was obtaired for the next fifty years.Results show that the peak spatial density of the debris cloud is around the height of the breakup object and will spread into a broader height interval continuously, and the fragments in the lower height interval will firstly increase and then decrease under the perturbation of air drag.关键词
空间碎片云/空间密度/解体模型/碎片分布/演化模型Key words
space debris cloud/spatial density/breakup model/debris distribution/evolution model分类
航空航天引用本文复制引用
张斌斌,王兆魁,张育林..空间物体解体碎片云的长期演化建模与分析[J].中国空间科学技术,2016,36(4):1-8,8.基金项目
国家自然科学基金(11572168) （11572168）
