多频多模GNSS接收机差分相位偏差的短期时变特性  

Characteristics of the short-term temporal variations of multi-constellation and multi-frequency GNSS receiver differential phase biases

作　　者：糜晓龙 袁运斌 张宝成 MI Xiaolong;YUAN Yunbin;ZHANG Baocheng(Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430017, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院精密测量科学与技术创新研究院,湖北武汉430017 [2]中国科学院大学,北京100049

出　　处：《测绘学报》2021年第10期1290-1297,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(42022025,41774042);中科院科研仪器设备研制项目(YJKYYQ20190063);国家重点研发计划(2016YFB0501900)。

摘　　要：随着中国北斗三号全球导航卫星系统(BeiDou-3 Navigation Satellite System,BDS-3)的建成、欧盟伽利略系统(Galileo)及日本准天顶卫星系统(quasi-zenith satellite system,QZSS)的发展,越来越多的卫星可用于反演大气电离层。通常,接收机差分码偏差(differential code biases,DCB)的短时变化被认为是利用全球导航卫星系统(Global Navigation Satellite System,GNSS)反演电离层的重要误差来源,然而,有研究表明,接收机差分相位偏差(differential phase biases,DPB)的短时变化也有可能影响电离层反演的精度和可靠性。为此,本文提出了基于站间单差模型并采用不变换参考星策略来估计接收机DPB的方法,可实现接收机DPB的连续估计。基于几台可跟踪BDS-3信号的多频多模接收机采集的数据,对BDS-3、Galileo、GPS和QZSS重叠频率组合的DPB进行了分析。结果表明,四系统的接收机DPB日变化都是很明显的,并且和温度有很强的相关性;基于不同系统重叠频率组合的DPB之间存在强相关;基于相同类型接收机的DPB的变化也存在明显的相关性。With the completion of the BeiDou-3 Navigation Satellite System(BDS-3)and the development of Galileo and quasi-zenith satellite system(QZSS),more and more satellites can be used to retrieve the atmospheric ionosphere.Generally,the short-time variation of receiver differential code biases(DCB)is considered as an important error source for ionospheric inversion using Global Navigation Satellite System(GNSS).However,some studies have shown that the short-time variation of receiver differential phase biases(DPB)may also affect the accuracy and reliability of ionospheric inversion.This paper presents a method to estimate the receiver DPB based on the single-differenced(SD)model without changing the reference satellite,which can realize the continuous estimation of the receiver DPB.DPB of the overlapping frequency combination of BDS-3,Galileo,GPS and QZSS is analyzed based on data collected from several multi-frequency and multi-constellation receivers capable of tracking the new signals of the BDS-3.The results show that①The intraday changes of DPB of BDS-3,Galileo,GPS and QZSS are obvious and have a strong correlation with temperature.②There is a strong correlation between the DPB of the overlapping frequency combinations of BDS-3,Galileo,GPS and QZSS.③There is a significant correlation between changes in DPB based on the baseline of the same type of combination.

关 键 词：差分码偏差 差分相位偏差 全球导航卫星系统 北斗全球导航卫星系统 伽利略系统 准天顶卫星系统 

分 类 号：P228[天文地球—大地测量学与测量工程]