BDS Satellites and Receivers DCB Resolution
BDS Satellites and Receivers DCB Resolution
复制标题
DOI：
10.1007/978-3-642-54740-9_17
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Qiang Zhang;Qile Zhao;Hongping Zhang;Guo Chen
中科院分区：
文献类型：
--
作者：
Qiang Zhang;Qile Zhao;Hongping Zhang;Guo Chen
利用GNSS观测数据建立高精度电离层模型，在精确点定位、实时导航和电离层研究中具有重要作用。影响总电子含量（TEC）准确估计的主要误差源之一是差分码偏（DCB）。目前，国际上GNSS服务（IGS）每日公布GPS和GLONASS卫星DCB和IGS跟踪站接收机DCB，北斗卫星导航系统（BDS）尚未提供BDS卫星DCB服务。基于北斗实验跟踪站（BETS），结合电离层残差法解析BDS卫星DCB和BETS跟踪站接收机B1和B2频率的DCB。结果表明，BDS卫星在B1和B2频段的DCB在−8 ~ 16 ns之间，稳定性基本优于0.5 ns。由于卫星高度的关系，IGSO卫星的DCB稳定性最高，MEO卫星次之，GEO卫星的DCB稳定性最差，尤其是C04和C05；BETS跟踪站接收机DCB基本在−5 ~−25 ns之间，稳定性优于1.5 ns。
Using GNSS observation data to establish high-precision ionospheric model has an important role in precise point positioning, real-time navigation and ionosphere research. One of the main error sources to accurately estimate total electron content (TEC) is Differential Code Bias (DCB). At present, the international GNSS Service (IGS) daily publish GPS and GLONASS satellites DCB and IGS tracking station receivers DCB, BeiDou Navigation Satellite System (BDS) has not provided the BDS satellites DCB services. Based on BeiDou Experimental Tracking Stations (BETS), and use a combination of ionospheric residual method to resolve BDS satellites DCB and BETS tracking station receivers DCB at B1 and B2 frequencies. The results show that, BDS satellites DCB are between −8 and 16 ns at B1 and B2 frequencies and their stabilities are basically better than 0.5 ns. Because of the satellite elevation, IGSO satellites DCB have highest stabilities, followed by MEO satellites, and GEO satellites have worst stabilities, especially C04 and C05; BETS tracking station receivers DCB are basically between −5 and −25 ns, and their stabilities are better than 1.5 ns.