北半球高纬地区北斗三号定位性能分析  

Analysis of BDS-3 Positioning Performance in Northern Hemisphere High Latitudes

作　　者：王胜骞 韩琦 王星 王洪龙 宋大鹏 WANG Shengqian;HAN Qi;WANG Xing;WANG Honglong;SONG Dapeng(Shandong Zhengyuan Digital City Construction Co.,Ltd.,Yantai 264000,China)

机构地区：[1]山东正元数字城市建设有限公司,山东烟台264000

出　　处：《地理空间信息》2022年第3期92-96,共5页Geospatial Information

基　　金：山东省自然科学基金资助项目(ZR2017MD029)。

摘　　要：基于北半球高纬地区的BDS-3数据,首先评估了BDS-3数据的质量,然后分析了BDS-3数据的伪距单点定位精度和双频组合精密单点定位精度。经研究发现,北半球高纬地区BDS-3的卫星可见数、卫星空间分布几何结构和平均信噪比均优于BDS-2,BDS-3的多路径RMS值小于BDS-2,且BDS-3中不存在系统偏差。BDS-3数据的伪距单点定位精度和双频组合精密单点定位精度均优于BDS-2,其中伪距单点定位精度优势较明显,而BDS-2/BDS-3组合的伪距单点定位精度和双频组合精密单点定位精度与BDS-2、BDS-3相比有明显提升,可为今后北半球高纬地区北斗高精度定位提供一定的参考。Based on BDS-3 data from Northern Hemisphere high latitudes,we firstly assessed BDS-3 data quality.Then we analyzed BDS-3 pseudo-range single-point positioning accuracy and dual-frequency combined precision single-point positioning accuracy.The results show that the visible number,satellite spatial distribution geometry and average signal-to-noise ratio of BDS-3 satellites in Northern Hemisphere high lati-tudes are better than those of BDS-2.The multipath RMS value of BDS-3 is less than that of BDS-2,and there is no system deviation in BDS-3 satellites.The pseudo-range single-point positioning accuracy and dual-frequency combined precision single-point positioning accuracy of BDS-3 are better than those of BDS-2,among which the pseudo-range single-point positioning is more obvious.The pseudo-range single-point positioning accuracy and dual-frequency combined precision single-point positioning accuracy of BDS-2/BDS-3 are better than those of BDS-2 and BDS-3,which can provide a certain reference for BDS high-precision positioning in Northern Hemisphere high latitudes in the future.

关 键 词：北半球高纬地区 BDS-3 数据质量 定位精度 

分 类 号：P228.1[天文地球—大地测量学与测量工程]