| 不同对流层改正方法对 PPP 定位效果影响的对比分析 |
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| 引用本文： | 闫建巧,陈明剑,汪威,尹子明.不同对流层改正方法对 PPP 定位效果影响的对比分析[J].测绘工程,2016,25(4):28-32. |
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| 作者姓名： | 闫建巧 陈明剑 汪威 尹子明 |
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| 作者单位： | 信息工程大学 导航与空天目标工程学院,河南 郑州,450001;信息工程大学 导航与空天目标工程学院,河南 郑州,450001;信息工程大学 导航与空天目标工程学院,河南 郑州,450001;信息工程大学 导航与空天目标工程学院,河南 郑州,450001 |
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| 摘 要： | 对流层延迟是影响精密单点定位效果的一项重要误差源,不同的对流层改正方法直接影响PPP的定位结果。对比分析采用UNB3模型、Saastamoinen模型、ZTD参数估计3种方法对PPP定位精度和收敛时间的影响。实验结果表明:3种模型平面改正精度和收敛时间基本一致。天顶方向改正精度UNB3模型与ZTD参数估计法基本相当,但两者优于Saastamoinen模型;收敛速度UNB3模型与Saastamoinen模型基本一致,ZTD参数估计法收敛速度较慢。
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| 关 键 词： | UNB3 Saastamoinen ZTD PPP 精度 收敛时间 |
Analysis of different troposphere correction comparison on PPP positioning effect |
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| YAN Jianqiao,CHEN Mingjian,WANG Wei,YIN Ziming.Analysis of different troposphere correction comparison on PPP positioning effect[J].Engineering of Surveying and Mapping,2016,25(4):28-32. |
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| Authors: | YAN Jianqiao CHEN Mingjian WANG Wei YIN Ziming |
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| Institution: | YAN Jianqiao;CHEN Mingjian;WANG Wei;YIN Ziming;College of Navigation and Aerospace Engineering,Information Engineering University; |
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| Abstract: | T ropospheric delay is a major error in precise point positioning .Different troposphere correction model has an important influence on PPP positioning effect .This paper calculates the observation data of five IGS reference stations using UNB3 model ,Saastamoinen model and ZTD parameter estimation algorithm .T he convergence time and positioning accuracy of various models are compared in PPP position . T he results show that :the plane correction accuracy has no difference of the three models .Elevation correction accuracy of the ZTD estimation method is same as UNB3 ,but they are better than Saastamoinen .The convergence time of UNB3 has no difference with Saastamoinen ,however ,the convergence time of the ZTD estimation method is the worst . |
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| Keywords: | UNB3 Saastamoinen ZTD PPP accuracy convergence |
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