卫星编队飞行碰撞预警策略仿真研究  

Simulation of Collision Forecast Strategy of Formation-flying Satellites

作　　者：杨雪榕[1] 陈忠贵[1] 梁加红[2] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073 [2]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《系统仿真学报》2011年第9期1961-1965,共5页Journal of System Simulation

基　　金：武器装备预研基金(9140A20010409KG0153)

摘　　要：针对近地圆轨道编队卫星碰撞预警问题,建立了仿真想定。提出了以拟最大瞬时碰撞概率为检测指标的碰撞预警策略,利用典型轨道仿真验证了策略的有效性。拟最大瞬时碰撞概率的计算,需要求解预警时间段内编队卫星间的最小距离和发生时刻。通过对距离平方的导数函数的分析,提出了一种变尺度直接逼近算法,用于寻找距离函数的极点,从而完成极小值的求解。对典型轨道的仿真结果显示:变尺度直接逼近算法能够完成距离函数最小值的求解。的研究成果将对卫星编队碰撞预警的工程化提供有益的参考。The simulation scenario was proposed,for the collision monitoring problem of the formation-flying satellites,which were on the near-earth circular orbits.The strategy based on the quasi maximum instantaneous collision probability（Q-MICP） was proposed and validated by several typical simulation scenarios.The calculation of the Q-MICP needed derivation of the minimum distance and happened epoch in the early-warning time period.The scaled step-size directly approaching（SSDA） algorithm was proposed creatively,based on the analysis of the derived function of the squared distance,for the pole searching of the function.It could solve the problem of the minimum distance＇s acquisition.The simulation for typical orbits results show that the collision monitoring strategy is effective and the SSDA algorithm is fit for the online calculation.The method can be good material and reference for the collision monitoring problems.

关 键 词：卫星编队仿真 碰撞预警 极点搜索 变尺度直接逼近算法 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]