摘要
提出了一种GNSS(global navigation satellite system,全球导航卫星系统)基准站原始观测数据虚拟化算法,可以将GNSS原始观测数据包含的基准站坐标信息,在一定精度范围内进行等效平移,使新的GNSS数据既可以继续作为参考基准使用,又不再与原始物理的基准墩和接收机天线位置存在对应关系。在理论分析的基础上,进一步通过实测数据的全球范围的动态精密单点定位(precise point positioning,PPP)及实时动态(real-time kinematic,RTK)载波相位差分试验验证了本算法在基准站平移30 m、300 m条件下,均可以达到1.5 mm以内的改正精度,基本不影响用户的精密定位性能。该算法可以为大规模GNSS基准网数据虚拟化网络传输提供参考。
This paper proposes a virtualization algorithm for raw observation data of GNSS(global navigation satellite system) base station, which can equivalently transform the reference station information contained in the original GNSS observation data within a certain precision range, so that the new GNSS observation data can be used as basis of reference, without corresponding to the original physical base pier and receiver antenna position.Based on theoretical analysis, the paper further verifies the algorithm through the global dynamic precise point positioning(PPP) and real-time kinematic(RTK) carrier phase difference experiment according to the measured data and shows that under the conditions of 30 m and 300 m translation, the correction accuracy within 1.5 mm can be achieved, which basically doesn’t affect the user’s precise positioning performance.This algorithm can provide a reference for large-scale GNSS datum network data virtualization network transmission.
作者
姜益昊
陶钧
杨超
龙宇浩
赵齐乐
JIANG Yihao;TAO Jun;YANG Chao;LONG Yuhao;ZHAO Qile(School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;GNSS Research Center,Wuhan University,Wuhan 430079,China)
出处
《测绘地理信息》
2020年第5期29-34,共6页
Journal of Geomatics
基金
国家自然科学基金(41774035,41404032,41674004)。
