摘要
针对靶场试验多星测量系统接收机的应用,为了提高导航系统的定位精确度,将北斗(BD)与全球定位系统(GPS)进行组网增加可见星。在分析几何精度因子(GDOP)与定位精确度关系基础上,提出一种模糊选星方法,对组网卫星星座进行优化组合。仿真结果表明,不论是单一系统还是双系统,模糊选星算法精度因子接近当下时刻最优,且组合系统在可见星和精确度方面优于单一定位系统,其研究结果对北斗系统的精确度验证和多星测量系统接收机在靶场的应用具有重要参考意义。
According to the application of multi-constellation receiver on range test, for improving the position precise of satellite navigation system,Beidou and Global Positioning System（GPS） are integrated to increase visible satellites. By analyzing the relationship between Geometric Dilution Of Precision（GDOP） and satellite position precise,a fuzzy selecting-satellites algorithm is proposed, which can make integrated satellites optimized. Simulation results indicate that the values of GDOP calculated by the new algorithm are close to the best one, both for single system and for double system; and the integrated system is superior to single system in satellites availability and positioning precise. The results can provide a reference for precision validation of Beidou system and the application of multi-constellation receiver on range test.
出处
《太赫兹科学与电子信息学报》
2016年第3期347-349,共3页
Journal of Terahertz Science and Electronic Information Technology
关键词
北斗
全球定位系统
几何精度因子
定位精确度
选星
Beidou
Global Positioning System
Geometric Dilution Of Precision
positioning precise
selecting-satellites
