基于STK的GNSS系统的定位精度分析  

An Analysis of the Positioning Accuracy of the GNSS System Based on STK

作　　者：刘周巍 LIU Zhou-wei(School of Territorial Resources Engineering,Kunming Science and Technology University,Kunming,Yunnan 65009)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《软件》2018年第8期104-109,共6页Software

摘　　要：利用STK对GNSS系统当中的GPS、GLONASS、BDS系统构建仿真星座模型,比较GPS、GLONASS、BDS系统的可见卫星数和DOP值。对三个系统进行系统间混合组合形成新的系统,组合系统有GPS/GLONASS、GPS/BDS、BDS/GLONASS和BDS/GPS/GLONASS,对组合系统进行仿真实验比较分析不同截止高度角下的可见卫星数变化和DOP值。对不同系统的区域定位性能进行了研究,研究结果表明了在GNSS系统不同组合系统的定位精度中,GPS/BDS/GLONASS的组合精度最高,GPS/BDS的组合是双系统中定位精度最优的,而单系统中BDS是定位精度最优的。Utilizing STK to set simulation satellite models of GPS, GLONASS, BDS system in GNSS system,and comparing the number of visible satellites and DOP values of GPS, GLONASS, BDS system. Intermingling the three systems thus forming new systems, the combining systems are GPS/GLONASS, GPS/ BDS, BDS/GLONASS and BDS/GPS/GLONASS. Then do simulation experiment on the combining systems, compare and analyze the change of visible satellites numbers and DOP values form different elevation mask angles. This paper does research on region positioning performance of different systems, the result shows that among the different combining sys-tems in GNSS system, of the positioning accuracy, GPS/ BDS/GLONASS owns the highest accuracy, GPS/BDS is the best in dual system, while BDS is the best in mono system.

关 键 词：GNSS 精度因子(DOP) STK 多星座 仿真实验 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]