标题:The Effect of DCB Correction on Multi-system Combination Precise Point Positioning
作者:Gu, Shiming; Dang, Yamin; Wang, Hu; Wang, Jian; Ren, Zhengzhao; Zhang, Jinxu
通讯作者:Gu, Shiming;Gu, SM;Gu, SM
作者机构:[Gu, Shiming; Wang, Jian; Ren, Zhengzhao; Zhang, Jinxu] Shandong Univ Sci & Technol, Qingdao, Shandong, Peoples R China.; [Gu, Shiming; Dang, Yamin; 更多
会议名称:10th China Satellite Navigation Conference (CSNC)
会议日期:MAY 22-25, 2019
来源:CHINA SATELLITE NAVIGATION CONFERENCE (CSNC) 2019 PROCEEDINGS, VOL I
出版年:2019
卷:562
页码:305-313
DOI:10.1007/978-981-13-7751-8_31
关键词:GNSS; DCB; Single point positioning
摘要:The satellite differential code bias (DCB) characterizes the time it takes for the signal to travel from the reference clock to the transmitting antenna. The internal delay of the signal can be up to ten nanoseconds, and the pseudorange can be up to the meter level. It must be corrected when high-precision point positioning. This paper analyzes the DCB correction formulas of different pseudorange combinations of GPS and BDS. Using GPS, GPS + BDS, GPS + GLAONASS + BDS and iGMAS released DCB products, standard single point positioning (SPP) and precise point positioning (PPP) solutions are performed for multiple stations in China. The results show that after DCB correction, the SPP accuracy is improved in decimeters, the average improvement rate of the three schemes is about 30%. The static PPP accuracy has a millimeter-level improvement and the accuracy is improved by about 10%. DCB correction has the greatest impact on the positioning of single GPS system. However, when multi-system combination positioning is performed, the influence of DCB correction on positioning accuracy is weakened, the improvement rate is greatly reduced, and the coordinate precision improvement of some stations is sub-millimeter.
收录类别:CPCI-S;EI
资源类型:会议论文
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