摘要
在圆轨道情况下推导了空间目标碰撞概率的显式表达式,将碰撞概率表示为空间目标交会几何条件(过交线高度差、过交线时间差、轨道夹角等)和RSW坐标系误差方差的显式函数。根据显式表达式对碰撞概率的影响因素进行了分析,研究了过交线高度差、过交线时间差、轨道夹角、位置预报误差、等效半径等因素对碰撞概率的影响,得出了一些有意义的结论。
The explicit expression of the collision probability is deduced under the assumption that the orbit is a circle. The collision probability is expressed as an explicit function of the encounter geometry （crossing altitude difference and time difference of the line of intersection of the two orbital planes, orbital planes included angle, etc） and position error variance in RSW coordinates. With the help of the explicit expression, the influencing factors of the collision probability were analyzed. Effects of factors such as altitude difference, time difference, orbital planes included angle, position predicted error variances and the equivalent radius of two objects were discussed. Some significant conclusions were obtained.
出处
《空间科学学报》
CAS
CSCD
北大核心
2009年第4期422-431,共10页
Chinese Journal of Space Science
关键词
空间碎片
碰撞概率
显式表达式
高度差
时间差
轨道夹角
Space debris, Collision probability, Explicit expression, Altitude difference, Time difference, Orbital planes included angle
