摘要
在分析相位偏差与精密单点定位模型在模糊度解算中内在关系的基础上,依据方向数据统计理论建立了相位偏差估计模型,设计了精密单点定位模糊度固定方案,解决了精密单点定位单差模糊度固定的问题。实验结果表明,在相位偏差改正后,精密单点定位模糊度固定解的收敛速度较浮点解提高了3/4左右、模糊度固定的Ratio因子较未改正提高了3倍、定位精度也得到明显提高。
According to the relationship between the phase biases and precise point positioning（PPP） model in ambiguity resolution, the estimation model for phase biases is derived based on the directional statisticsnd, and the ambiguity fixing scheme for PPP is designed which can solve the problem of ambiguity fixing for PPP. The results show that, based on phase biases correction, the convergence speed of PPP ambiguity fixed solution is improved by 3/4 compared with floating solution, the Ratio value is improved by three times, and positioning accuracy is also obviously improved.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第5期124-128,132,共6页
Journal of Geodesy and Geodynamics
基金
安徽省国土资源科技项目(2011-K-22)
淮南市科技计划项目(2013A4021)
安徽理工大学硕博基金
关键词
精密单点定位
相位偏差
模糊度
固定解
Ratio值
Precise Point Positioning（PPP）
phase biases
ambiguity
fixed solution
Ratio value
