| 改进了系统差附加条件的半参数回归与模型精化 |
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| 引用本文： | 郑磊,陈宏玉,张启斌,史永江.改进了系统差附加条件的半参数回归与模型精化[J].测绘工程,2011,20(2):15-17. |
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| 作者姓名： | 郑磊 陈宏玉 张启斌 史永江 |
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| 作者单位： | 天津市市政工程设计研究院;江苏省工程物理勘察院; |
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| 基金项目： | 国家863计划资助项目(2009AA12Z301) |
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| 摘 要： | 系统差之和∑si≠0时,利用附加系统差之和∑si＝0的半参数模型往往得不到较好的数据处理结果,文中从理论上对系统差附加条件进行了改进,并基于改进前、改进后的半参数模型以及经典最小二乘平差模型对系统差之和∑si≠0时的算例进行处理.结果表明,改进后的半参数模型大大提高了数据处理精度.
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| 关 键 词： | 系统差 半参数回归 模型精化 |
Semi-parametric regression and model refining using modified additional conditions of systematic error |
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| ZHENG Lei,CHEN Hong-yu,ZHANG Qi-bin,SHI Yong-jiang.Semi-parametric regression and model refining using modified additional conditions of systematic error[J].Engineering of Surveying and Mapping,2011,20(2):15-17. |
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| Authors: | ZHENG Lei CHEN Hong-yu ZHANG Qi-bin SHI Yong-jiang |
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| Institution: | ZHENG Lei1,CHEN Hong-yu2,ZHANG Qi-bin1,SHI Yong-jiang1(1.Tianjin Municipal Engineering Design & Research Institute,Tianjin 300051,China,2.Engineering Geophysical Exploration Institute of Jiangsu Provience,Nanjing 210008,China) |
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| Abstract: | The accuracy of the estimated value of the parameters acquired using semi-parametric model with the additional condition of the sum of the estimated value of systematic error ∑si≠0,while the sum of the estimated value of systematic error ∑si=0 in fact,was always not good.So the additional condition of the sum of the estimated value of systematic error was modified theoretically in this paper and the effective of the modified model was proved using the data which the sum of the estimated value of systematic error ∑si≠0.The result of the data processed shows that the accuracy of the estimated value of the parameters was improved effectively. |
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| Keywords: | systematic error semi-parametric regression model refine |
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