摘要
由北斗全球系统(BDS-3)基本系统卫星播发的BlC和B2a信号为用户提供了更优信号选择和信号组合,新信号的应用离不开差分码偏差(DCB)的支持。本文基于国际GNSS监测评估系统跟踪站数据,尝试解算BDS-3卫星频间DCB产品,针对BDS-3播发的多个频点信号数据,设计了“闭合差”指标评估DCB产品精度,结果表明精度好于0.5m。
The BlC and B2a signals broadcast by the BDS-3 satellites provide users with better signal selection and signal combination.However,the application of the new signals depends on the support of differential code bias (DCB).Based on the data from International GNSS Monitoring and Assessment system tracking stations,the BDS-3 satellite inter-frequency DCB products are calculated and released.Based on the multiple frequencies signal data broadcast by the BDS-3,the "error of closure" index is designed to evaluate the DCB product accuracy.The result shows that the accuracy is better than 0.5ns.
作者
朱永兴
文毅
李鼎
贾小林
ZHU Yongxing;WEN Yi;LI Ding;JIA Xiaolin(School of Geospatial Information ,Information Engineering University, Zhengzhou 450001,China;Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;School of Geological and Surveying & Mapping Engineering,Chang’an University, Xi’an 710054,China)
出处
《测绘科学与工程》
2019年第1期7-11,21,共6页
Geomatics Science and Engineering
