| 天线相位中心改正模型对PPP参数估计的影响 |
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| 引用本文： | 张小红,李盼,李星星,郭斐.天线相位中心改正模型对PPP参数估计的影响[J].武汉大学学报(信息科学版),2011,36(12):1470-1473. |
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| 作者姓名： | 张小红 李盼 李星星 郭斐 |
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| 作者单位： | 武汉大学测绘学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家自然科学基金资助项目(40874017,41074024) |
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| 摘 要： | 比较了IGS发布的相对天线相位中心改正模型与绝对天线相位中心改正模型,分析了两种不同模型对精密单点定位（PPP）参数估计的影响。结果表明,采用不同的天线相位中心改正模型,天顶对流层延迟（ZPD）的估值存在5mm左右的差异,接收机钟差参数存在3ns左右的差异,估计的测站坐标高程方向有1cm左右的差异。使用绝对天线相位中心模型估计得到的ZPD精度优于5mm,高程方向定位精度约为1cm,接收机钟差估计的精度达0.1ns。
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| 关 键 词： | 精密单点定位 绝对天线相位中心模型 相对天线相位中心模型 参数估计 |
Influcence of Antenna Phase Center Correction Model on Precise Point Positioning |
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| ZHANG Xiaohong LI Pan LI Xingxing GUO Fei.Influcence of Antenna Phase Center Correction Model on Precise Point Positioning[J].Geomatics and Information Science of Wuhan University,2011,36(12):1470-1473. |
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| Authors: | ZHANG Xiaohong LI Pan LI Xingxing GUO Fei |
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| Institution: | ZHANG Xiaohong1 LI Pan1 LI Xingxing1 GUO Fei1(1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | Both the relative and absolute models of antenna phase center(IGS_01 and IGS05) are described.Influence of these two models on PPP estimation,including coordinates,Zenith path delay(ZPD) and receiver clock biases are analyzed.Results show that the difference of ZPD estimates is about 5 mm,and that of estimated receiver clock bias and height of site is relatively around 3 ns and 1 cm,respectively,based on different antenna phase center models.In addition,with the absolute model,the accuracy of PPP-derived ZP... |
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| Keywords: | PPP absolute antenna phase center relative antenna phase center parameter estimation |
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