| 曲面拟合模型在小区域GPS高程拟合中的应用 |
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| 引用本文： | 焦殿阳,张旭晴.曲面拟合模型在小区域GPS高程拟合中的应用[J].东北测绘,2012(3):24-26. |
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| 作者姓名： | 焦殿阳 张旭晴 |
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| 作者单位： | [1]辽宁省第九地质大队,辽宁铁岭112000 [2]吉林大学地球探测与科学技术学院,吉林长春130026 |
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| 基金项目： | 国家自然科学基金项目（41072196）资助;吉林大学基本科研业务费项目（200903047）资助 |
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| 摘 要： | 虽然GPS技术非常成熟，应用普遍，但其高程测量精度仍未超过国家等级几何水准测量的精度，究其原因除在GPS测量过程中存在各种观测误差外，最主要的是两种测量方法所采用的基准面不同。本文主要是通过在吉林松原灌区的GPS高程拟合工作，提出了在测区范围较小且测区内地形条件一般的情况下，二次多项式曲面函数拟合优于多面函数拟合的观点。
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| 关 键 词： | 曲面拟合模型 GPS 小区域 高程拟合 |
Application of Surface Fitting Model in GPS Elevation Fitting in Small Area |
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| Institution: | JIAO Dian - yang, ZHANG Xu - qing (1. The Ninth Geological Brigate of Liaoning province , Tiding, 112000, China; 2. College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China) |
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| Abstract: | The application of GPS technology becomes more and more mature and extensive, but the accuracy of GPS elevation measurement also does not fit for the accuracy of the national grade geometry standards of measurement. Considering the reason, except for the variety of observational error in the GPS measurement, the most important reason is the different datum plane which the two measurement methods. Through the GPS elevation fitting results of Songyuan irrigation district in Jilin Province, this paper puts forward the view that when the mapping area is small and the terrain situation is ordinary, the quadratic polynomial surface function fitting is better than multi -faceted functions fitting. |
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| Keywords: | surface fitting model GPS small area elevation fitting |
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