高纬地区北斗双频数据质量分析  

Data Quality Analysis of Beidou Dual-frequency Data in High Latitude Area

作　　者：孙启建 王永澍 范雨龙 SUN Qijian;WANG Yongshu;FAN Yulong(The Third Topographic Survey Team of the Ministry of Natural Resources,Harbin Heilongjiang 150000,China)

机构地区：[1]自然资源部第三地形测量队,黑龙江哈尔滨150000

出　　处：《北京测绘》2020年第7期952-956,共5页Beijing Surveying and Mapping

摘　　要：对高纬度地区北斗二号的双频(B1/B2)数据质量进行评估,主要包括北斗卫星可见数、位置精度因子(PDOP)、信噪比以及多路径。基于IGS连续跟踪站的实测数据分析发现,高纬度地区的卫星可见数少于低纬度地区,PDOP值远远大于低纬度地区,高纬度地区部分卫星信噪比高于低纬度地区部分卫星信噪比,高纬度地区的北斗卫星多路径效应要小于低纬度地区,B1频率的伪距噪声要大于B2频率的伪距噪声。The dual-band(B1/B2)data quality of Beidou-2 in high latitudes is evaluated,including the visible number of Beidou satellites,position accuracy factor(PDOP),signal-to-noise ratio,and multipath.Based on the measured data analysis of IGS continuous tracking stations,it is found that the number of satellites visible in high latitudes is less than that in low latitudes,and the PDOP value is much larger than that in low latitudes.In contrast,the multipath effect of Beidou satellites in high latitudes is smaller than in low latitudes,and the pseudorange noise at B1 frequency is greater than the pseudorange noise at B2 frequency.

关 键 词：北斗 高纬度 数据质量 双频 

分 类 号：P228.4[天文地球—大地测量学与测量工程]