摘要
以卫星两行轨道根数(TLE)和简化常规/深空扰动的近似解析解(SGP4/SDP4)模型预报卫星的空间位置,并以南京地区某地面站为例,分析了单北斗、单全球定位系统(GPS)和GPS+北斗3种卫星定位系统下南京地区的精度衰减因子(DOP)在2013-05-16—2013-05-23 1周时间的变化特点,以指导制定地面全球导航卫星系统(GNSS)观测方案。该分析可增强对GPS和北斗系统定位精度了解。
The spatial position of satellites is predicted by using satellite two-line orbital element(TLE)and simplified general/deep-space perturbation version4(SGP4/SDP4)model.The variation characteristics of dilution of precision(DOP)are analyzed based on the single Beidou,single global position system(GPS)and GPS+ Beidou systems during the period from May 16 th,2013 to May 23 rd,2013in Nanjing.The results can be used for guiding the surface global navigation satellite system(GNSS)observing scheme,thus it is helpful for strengthening the understanding of GPS + Beidou positioning precision.
出处
《指挥信息系统与技术》
2015年第4期68-72,共5页
Command Information System and Technology
关键词
北斗卫星导航系统
全球定位系统
两行轨道根数
简化常规/深空扰动的近似解析解模型
Beidou satellite navigation system
global position system(GPS)
two-line orbital el-ement(TLE)
simplified general perturbation version4(SGP4)model
simplified deep-space per-turbation version4(SDP4)model
