摘要
关于在大气阻力作用下卫星生存寿命的估计 ,提出了一种高效的数值方法 ,称为微分 -积分法。它的实质是以轨道要素的平均变化率为基础的微分方程 ,而方程的右端包含定积分。与传统方法比较验证了此新方法的正确性 ,并且显示了它的极高效率。在诸如空间碎片减缓这种需要非常大量的计算卫星寿命的问题中 ,新方法的价值得到充分体现。
Regarding the evaluation of satellite orbit lifetime under effect of atmospheric drag, a highly efficient numerical method called differentiation integration method is proposed. The essence of this method is a group of differential equations based on the average change rate of orbit elements, and the right sides of these equations contain definite integrals. The calculation comparison between this method and the traditional ones proves its correctness and displays its high efficiency. This method is very powerful especially for problems concerning space debris mitigation that require a large amount of calculation of the satellite orbit lifetime.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2002年第2期44-48,共5页
Chinese Space Science and Technology
基金
中国空间碎片基础研究基金资助
关键词
轨道寿命
大气摄动
空间碎片
计算方法
卫星
Orbital lifetime Atmospheric effect Space debris Calculation method
