卫星轨道误差的相关性  

Relativity of Satellite Orbit Error

作　　者：柳仲贵[1] 

机构地区：[1]北京跟踪与通信技术研究所

出　　处：《飞行器测控学报》2011年第5期45-49,共5页Journal of Spacecraft TT&C Technology

摘　　要：卫星的轨道误差是卫星测控中需加以约定的重要指标之一,其常用的表示方法主要有Kepler轨道根数形式和RTN投影形式。本文推导了RTN形式的卫星位置、速度误差与Kepler根数误差间的关系,给出了近圆轨道中RTN形式位置、速度误差间的定量关系,分析了RTN形式位置误差约束下Kepler根数误差的相关性,并分别给出了验证算例。该结果可用于分析确定卫星轨道误差指标,使其彼此匹配。Satellite orbit errors are one of the most important specifications and they should be clarified in TTC requirements.Generally speaking,the errors can be illustrated in the form of both Kepler orbit elements and its projection in RTN directions.This paper discusses the relationship between errors of satellite position/velocity expressed in RTN and those of Kepler orbit elements.For orbits with e≤0.001,a simplified expression is given to show the relationship between position error and velocity error.The relativity of element errors is discussed under the constraints of position errors.Examples are presented to demonstrate the results described above.

关 键 词：卫星 轨道误差 相关性 

分 类 号：P135[天文地球—天体力学]