| 基于二次曲面的高程异常拟合方法比较研究 |
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| 引用本文： | 陈晓阳.基于二次曲面的高程异常拟合方法比较研究[J].测绘与空间地理信息,2020(1):218-220. |
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| 作者姓名： | 陈晓阳 |
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| 作者单位： | 山东科技大学测绘科学与工程学院 |
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| 摘 要： | 结合风河快速路的相关数据,分别采用二次曲面模型及移动二次曲面模型,并结合不同定权方法,设计了不同的高程异常模型拟合方案,分析了不同方案在该地区的适用性。各方案拟合精度均可达到毫米级,通过对比分析,认为二次曲面模型在拟合该地区高程异常值时有较好应用价值;采用距离定权法的移动二次曲面模型,可以在该地区得到精度更高的拟合结果。
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| 关 键 词： | 高程异常 GPS高程拟合 二次曲面模型 移动二次曲面模型 |
Comparative Study on Abnormal Height Fitting Method Based on Quadric Surface |
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| CHEN Xiaoyang.Comparative Study on Abnormal Height Fitting Method Based on Quadric Surface[J].Geomatics & Spatial Information Technology,2020(1):218-220. |
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| Authors: | CHEN Xiaoyang |
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| Institution: | (College of Geomatics,Shandong University of Science and Technology,Qingdao 266590,China) |
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| Abstract: | Based on the relevant data of Fenghe Expressway,quadric surface model and moving quadric surface model are used respectively,and different abnormal height method fitting schemes are designed according to different weighting methods.Analyzed the applicability of different schemes in this area.The fitting accuracy of each scheme can reach millimeter level.Through comparative analysis,it is considered that the quadric surface model has good application value when fitting the abnormal height value of the region.The moving quadric surface model using the distance weighting method can obtain the higher precision fitting result in this area. |
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| Keywords: | abnormal height GPS height fitting quadric surface model moving quadric surface model |
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