低轨星座传感器资源实时调度方法  

A Novel Real-Time Sensor Scheduling Method of LEO Constellation

作　　者：王铁兵[1] 罗少华[1] 吴京[1] 许丹[1] 

机构地区：[1]国防科技大学电子科学与工程学院

出　　处：《飞行器测控学报》2011年第5期11-15,共5页Journal of Spacecraft TT&C Technology

摘　　要：针对低轨星座传感器资源调度问题,提出了一种基于几何精度衰减因子（GDOP）和目标位置估计误差椭球的调度方法,该方法综合考虑了目标的静态、动态定位因素,优先选择卫星目标视线垂直于误差椭球长轴的传感器资源对目标进行跟踪。仿真结果表明,与已有的仅考虑GDOP的调度方法相比,该方法既节省了传感器资源,又提高了目标的跟踪精度。A novel sensor scheduling algorithm based on Geometric Dilution of Precision（GDOP） and the estimation error ellipsoids of target positions is proposed for sensor scheduling of Low-Earth-Orbit（LEO） constellations.This method integrates both static and dynamic location precision parameters and selects sensors whose line of sight（LOS） is perpendicular to the semi-major axis of the error ellipsoid to carry out tracking of space objects.Simulation results indicate that,compared with traditional methods which take into consideration only the static precision parameter GDOP,the algorithm not only saves sensor resources,but also improves target tracking accuracy.

关 键 词：低轨星座 几何精度衰减因子 误差椭球 传感器调度 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]