BDS-3新卫星对BDS-2短基线相对定位精度的影响分析  

Analysis of Impact of New BDS-3 Satellites on Relative Positioning Accuracy of BDS-2 Short Baseline

作　　者：陈永健[1] CHEN Yongjian(Hubei Coal Geology Geophysical Prospecting and Surveying Team,Wuhan 430200,China)

机构地区：[1]湖北煤炭地质物探测量队,湖北武汉430200

出　　处：《测绘地理信息》2022年第2期6-10,共5页Journal of Geomatics

基　　金：湖北煤炭地质局科技项目(ZMHB-2018-Ⅲ-03)。

摘　　要：针对BD-3新卫星对BDS-2定位性能的影响,本文基于IGS(International GNSS Service)连续跟踪站组成的短基线,分析了BDS-3卫星对BDS-2卫星数据质量以及短基线相对定位精度的影响。研究发现,BDS-3卫星整体数据质量优于BDS-2卫星数据质量,BDS-3卫星使BDS-2卫星B1I、B2I以及B3I平均信噪比增加了1 dB-Hz,使B1I、B2I的多路径RMS值有所降低。BDS-3卫星的加入使BDS-2短基线相对定位精度有所提升,尤其是三频组合及竖直方向最为明显,这是因为BDS-3新卫星的加入及BDS卫星数的增加。In view of the influence of new BDS-3 satellite on the positioning performance of BDS-2,this paper analyzes the influence of BDS-3 satellite on the data quality and relative positioning accuracy of BDS-2 satellite based on the short baseline composed of IGS continuous tracking station.It is found that the overall data quality of BDS-3 satellite is better than that of BDS-2 satellite.BDS-3 satellite increases the average signal-to-noise ratio of B1I,B2I and B3I of bds-2 satellite by1 dB-Hz,and reduces the multipath RMS value of B1I and B2I.The addition of BDS-3 satellite improves the relative positioning accuracy of BDS-2 short baseline,especially the triple frequency combination and vertical direction.This is due to the addition of new BDS-3 satellites and the increase in the number of BDS satellites.

关 键 词：BDS-3 BDS-2 相对定位 精度 数据质量 

分 类 号：P228[天文地球—大地测量学与测量工程]