| 基于移去--恢复技术的区域大地水准面拟合方法研究 |
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| 引用本文： | 何万平,楼立志.基于移去--恢复技术的区域大地水准面拟合方法研究[J].全球定位系统,2009,34(6):32-36. |
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| 作者姓名： | 何万平 楼立志 |
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| 作者单位： | 同济大学测量与国土信息工程系,上海,200092 |
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| 摘 要： | 在介绍移去恢复法基本原理的基础上通过对移去项分两种不同情况进行计算，然后对移去后剩余部分分别用多面函数法和四次多项式法进行拟合内插，恢复移去项后得出拟合后的区域大地水准面。经比较分析知，四次多项式在结合重力模型和GPS水准拟合大地水准面中精度较高，且改进的移去项有助于提高拟合精度。
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| 关 键 词： | 区域大地水准面 高程异常 移去--恢复技术 多面函数 四次多项式 |
Regional Geoid Determination Methods Based on the Remove-Restore Technique |
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| HE Wan-ping,LOU Li-zhi.Regional Geoid Determination Methods Based on the Remove-Restore Technique[J].Gnss World of China,2009,34(6):32-36. |
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| Authors: | HE Wan-ping LOU Li-zhi |
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| Institution: | (Department of Survey and Geo-In f ormatics , Tongji University, Shanghai 200092 China) |
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| Abstract: | The basic principle of the remove--restore technique is introduced in this paper, calculating the removed term in two different cases. Then, fits and interpolates the remaining part with multisurface function method and quartic polynomial method. So, determinates the regional geoid after the removed term to be restored. With the comparative analysis for this, it can he learnt that the quartie polynomial method fitted more accurate than the multisurface function method when geoid determination using gravity field model and the GPS leveling data, and the removed term will help to improve the fitting accuracy. |
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| Keywords: | Regional geoid height anomaly remove-restore technique multisurface function quartic polynomial |
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