| 关于重力大地水准面计算精度问题 |
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| 引用本文： | 黄谟涛,翟国君,赵明才. 关于重力大地水准面计算精度问题[J]. 测绘学院学报, 1993, 0(4) |
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| 作者姓名： | 黄谟涛 翟国君 赵明才 |
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| 作者单位： | 天津海洋测绘研究所(黄谟涛，翟国君)，天津海洋测绘研究所(赵明才) |
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| 摘 要： | 在众多影响重力大地水准面计算精度的因素中,计算模型误差及地面观测数据误差是其中的两个主要误差源。本文从实用角度出发,详细探讨了重力大地水准面计算公式选择问题;并通过实际数值计算,研究确定了地面观测数据计算精度、密度及覆盖范围等参数指标;最后以180阶次位系数定义地球重力场,对重力大地水准面计算精度进行了实际检验。
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| 关 键 词： | 大地水准面 高程异常 重力异常 精度估算 |
On the Accuracy of Computing Gravimetric Geoid |
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| Huang Motao Zhai Guojun Zhao Mingcai. On the Accuracy of Computing Gravimetric Geoid[J]. Journal of Institute of Surveying and Mapping, 1993, 0(4) |
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| Authors: | Huang Motao Zhai Guojun Zhao Mingcai |
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| Affiliation: | Tianjin Institute of Hydrograghic Surveying and Charting |
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| Abstract: | As we know, the errors of computation model and observed data are the major error source of computing gravimetric geoid. With the view of practical use, the choice of computation model is discussed in this paper in detail. The accuracy, density and coverage of observed data are determined through some numerical computation. And finally, the computation accuracy of gravimetric geoid is checked after the earth' gravity field is defined by a set of potential coefficients of RAPP (1981) to degree 180. |
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| Keywords: | Geoid Height anomoly Gravity anomaly Precision estimation |
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