| 利用半参数模型精化GPS绝对定位中残余的系统偏差 |
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| 引用本文： | 刘忠,瞿伟,王少闽.利用半参数模型精化GPS绝对定位中残余的系统偏差[J].测绘工程,2007,16(5):28-30,35. |
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| 作者姓名： | 刘忠 瞿伟 王少闽 |
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| 作者单位： | 西安市勘察测绘院,陕西,西安,710048;长安大学,地质工程与测绘工程学院,陕西,西安,710054 |
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| 摘 要： | 为了减弱GPS单点定位中残余的系统偏差对参数估值精度的影响,在误差方程中引入一非参数分量来表示测量中残余的系统误差,即利用半参数模型来精化GPS绝对定位的函数模型。最后利用实测GPS数据检验了此算法的有效性,计算结果表明在一定程度上该算法不仅能够提高参数估值的精度,而且还能提取出平差模型中残余的系统偏差。但因为半参数模型在测量数据处理中的应用才刚刚起步,还有许多问题值得在理论与实践上进行深入的探讨与研究。
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| 关 键 词： | 半参数模型 GPS绝对定位 系统偏差 |
| 文章编号： | 1006-7949（2007）05-0028-03 |
| 收稿时间： | 2006-11-27 |
| 修稿时间： | 2006-11-27 |
Refining the remained systematic error in GPS single positioning using semiparamatric model |
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| LIU Zhong,QU Wei,WANG Shao-min.Refining the remained systematic error in GPS single positioning using semiparamatric model[J].Engineering of Surveying and Mapping,2007,16(5):28-30,35. |
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| Authors: | LIU Zhong QU Wei WANG Shao-min |
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| Abstract: | In order to reduce the influence of the remained systematic error in GPS single positioning on the estimations of the unknown parameters,non-paramatrics are introduced to show the remained systematic error,that is using the semiparamatric model to refine the functional model of GPS single positioning.Finally,the effectiveness of this method is checked by actual GPS data.The calculation shows that this model not only guarantees the reliability of the estimated parameters in some degree,but also identifies the remained systematic error in GPS single positioning.But Because non-paramatrics model has just been applied in survey data processing,many problems in theory and practice need further study. |
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| Keywords: | semiparametric model GPS single positioning systematic error |
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