| GPS数据处理中基准站的加权及其影响 |
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| 引用本文： | 隋立芬,许其凤.GPS数据处理中基准站的加权及其影响[J].测绘学院学报,2002,19(4):235-238,242. |
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| 作者姓名： | 隋立芬 许其凤 |
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| 作者单位： | 信息工程大学测绘学院 河南郑州450052
(隋立芬)，信息工程大学测绘学院 河南郑州450052(许其凤) |
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| 基金项目： | 国家自然科学基金资助项目(40 0 740 0 6)，测绘与遥感信息工程国家重点实验室基金项目 |
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| 摘 要： | 将Bayes估计中的全部参数加权扩展为部分参数加权，从Bayes定理出发导出了参数估值公式和精度估计公式；推导了GPS数据处理中基准站加权不当对平差值的影响公式；证明了基准站加权不当时将影响参数估值的最优性，使估值精度降低，并用算例估计了基准站加权不当对框架参数影响的大小。
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| 关 键 词： | GPS 数据处理 基准站 权 Bayes估计 全球定位系统 |
Reference Stations Weight Attached and Its Influence in GPS Data Processing |
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| SUI Li-fen,XU Qi-feng Institute of Surveying and Mapping,Information Engineering University,Zhengzhou ,China.Reference Stations Weight Attached and Its Influence in GPS Data Processing[J].Journal of Institute of Surveying and Mapping,2002,19(4):235-238,242. |
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| Authors: | SUI Li-fen XU Qi-feng Institute of Surveying and Mapping Information Engineering University Zhengzhou China |
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| Institution: | SUI Li-fen,XU Qi-feng Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China) |
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| Abstract: | This paper develops Bayesian theory from all parameter with prior weight to part parameters with prior weight. Formulas of paramater estimation and accuracy estimates are derived from Bayesian theorem. Influence formulas of improper weight attached to datum station on paramater estimation are also derived from GPS data processing. When reference stations attached improper weight, that will influe best property and accuracy of parameter estimation. The values of influence on coordinate frame parameters are estimated in two useful examples. |
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| Keywords: | GPS datum processing reference stations weight bayesian estimates |
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