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.
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
关键词
低轨星座
几何精度衰减因子
误差椭球
传感器调度
Low Earth Orbit（LEO） Constellation
Geometric Dilution of Precision（GDOP）
Error Ellipsoid
Sensor Scheduling
