摘要
针对传统地基监视系统对地球同步轨道(GEO)卫星静地测量模式不利于获取其态势信息,而空间目标监视平台利用其快速轨道运动、增强观测几何强度和GEO卫星动力学模型的约束作用,有利于对GEO卫星环带的跟踪、监视和编目处理这一问题,分析了高、低轨平台与其观测模式,采用了数值微分法计算变分方程系数阵的定轨算法,统计了光学观测误差对定轨结果的影响.仿真计算表明,高、低轨平台对GEO卫星的定轨精度均在公里级,低轨平台对GEO卫星的定轨精度好于高轨监视平台,观测系统误差是定轨误差的主要来源.
The state information of GEO satellite can not be easily accepted by the ground-based surveillance system owning to its geostationary observing model.To monitor and catalog all GEO satellites under surveillance,both the structure in observation geometry and constrained effects in dynamic models are strengthened via in-orbit tracking by space platform.High or low-orbit platform and their observation methods were analyzed.The effects of orbit determination caused by measuring errors were studied.Simulation shows that orbit determination precision for GEO satellites is in kilometer level on high or low-orbit platform,but the orbit determination accuracy with low-orbit platform is better than with high-orbit platform.System error is the main source of orbit determination errors.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2010年第12期1422-1426,共5页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(40974019
10903032)
关键词
天基空间目标监视系统
轨道确定
观测误差
精度分析
光学传感器
space-based space surveillance（SBSS）
orbit determination
observation errors
accuracy analysis
optical sensor
