摘要
探讨了组合多系统的精密单点定位(PPP),通过MGEX实测数据进行多系统PPP解算,分析了不同系统组合PPP定位精度和收敛速度,以及多系统组合对GPS模糊度首次固定时间的影响。实验结果表明,在静态和仿动态条件下,组合系统PPP的收敛速度和短时间定位精度明显优于单系统PPP,同时多系统组合PPP能够加快浮点模糊度收敛,缩短GPS PPP模糊度的首次固定时间。
This article explores the combined multi-system precise point positioning （ PPP） .Based on MGEX data,the combined multi-system PPP is calculated and the positioning accuracy and convergence speed are analyzed.The influence of combined multi-system on the time of first-fixed solution of GPS PPP is also studied.The experimental results show that the convergence time and the short time positioning accuracy of the combined multi-system PPP are better than those of the single system PPP.The combined multi-system PPP can accelerate the convergence speed of float ambiguity, and the time of first-fixed solution can also be shorten.
出处
《海洋测绘》
CSCD
2017年第1期9-13,共5页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41274045
41574010
41604013)
地理信息工程国家重点实验室开放基金(SKLGIE2015-Z-1-1)
