| GPS精密点定位的数据处理 |
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| 引用本文： | 胡丛玮,陈武,高山,陈永奇,丁晓利.GPS精密点定位的数据处理[J].南京航空航天大学学报(英文版),2005,22(2). |
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| 作者姓名： | 胡丛玮 陈武 高山 陈永奇 丁晓利 |
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| 作者单位： | 香港理工大学土地测量及地理资讯学系,香港九龙,中国;同济大学土木工程学院,上海,200092,中国;香港理工大学土地测量及地理资讯学系,香港九龙,中国 |
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| 摘 要： | 在GPS精密点定位数据处理中,通常采用所谓无差分模型.然而,GPS单站观测量也可通过不同差分组合以减少未知参数数目,且在理论上与无差分模型等价.文中利用实际GPS观测数据,比较了不同点定位差分模型的定位精度和其他指标.
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| 关 键 词： | GPS 精密点定位 误差模型 |
DATA PROCESSING FOR GPS PRECISE POINT POSITIONING |
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| HU Cong-wei,CHEN Wu,GAO Shan,Chen Yong-qi,DING Xiao-li.DATA PROCESSING FOR GPS PRECISE POINT POSITIONING[J].Transactions of Nanjing University of Aeronautics & Astronautics,2005,22(2). |
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| Authors: | HU Cong-wei CHEN Wu GAO Shan Chen Yong-qi DING Xiao-li |
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| Abstract: | In the data processing of the precise point positioning (PPP), the un-difference method is commonly used. However, GPS measurements can be differenced with satellites or different observation epochs. In theory, these differencing approaches should be mathematically equivalent. The positioning performance of different PPP data models, including un-difference (UD), satellite difference (SD), time difference (TD) and time-satellite difference (TSD), is examined using the 24 h GPS observation. The positioning accuracy, convergence of ambiguity, and tropspheric delay estimation with these four models are compared with each other. |
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| Keywords: | GPS precise point positioning error model |
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