摘要
为了实时准确地掌握和了解导航系统飞行物的位置和空间关系,以提高北斗系统的运行准确性,该文根据北斗卫星导航系统不间断授时服务特点,提出一种利用北斗卫星授时信号估计空间飞行物轨迹的方法。卫星下发的授时信号到达用户终端的过程中,受到空间飞行物的遮挡而产生扰动。用户终端将接收的扰动信号的变化量通过各种网络汇聚到数据中心,如果用户终端、空间星座和地面数据中心的时钟同步,在多个用户终端存在的条件下,将数据中心计算出的飞行物的时空参量等信息标注到空间地理信息系统上,连接这些空间点,就可以绘制出空间飞行物的运动轨迹。
In this paper,track notation of flyers was proposed based on BDS which has uninterrupted timing service features.Sheltered by the spatial flyer,the timing signals from satellite will be disturbed when arriving at the user terminals which will then transmit the length and depth of the received disturbance signal through a variety of networks to the data center.If the user terminal,spatial constellation and the data center on the ground have synchronous clock,the data center can calculate the spatial and temporal parameters of the flyer when several user terminals coexist.Marking parameters of the flyer and connecting these points in spatial Geographic Information System,the trajectory of the spatial flyer could be mapped.
出处
《测绘科学》
CSCD
北大核心
2015年第2期26-28,87,共4页
Science of Surveying and Mapping
基金
辽宁省教育厅优秀人才计划项目(CR201006)
