| 扰动重力场精密确定与逼近效果分析 |
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| 引用本文： | 张小林,赵东明,王庆宾.扰动重力场精密确定与逼近效果分析[J].测绘学院学报,2009(3). |
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| 作者姓名： | 张小林 赵东明 王庆宾 |
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| 作者单位： | 信息工程大学测绘学院; |
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| 摘 要： | 介绍了局部重力场逼近的点质量方法;详细论述了组合点质量模型的构制方法;利用实测重力异常数据建立了某区域组合点质量模型;分析了各层点质量的散射误差、逼近效果、随高度的变化特征。结果表明,组合点质量模型能以较高精度逼近外部扰动重力场。
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| 关 键 词： | 点质量 重力异常 重力场逼近 散射误差 扰动引力矢量 |
Precise Determination and Approximation Analysis of Disturbing Gravity Field |
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| ZHANG Xiao-lin,ZHAO Dong-ming,WANG Qing-bin.Precise Determination and Approximation Analysis of Disturbing Gravity Field[J].Journal of Institute of Surveying and Mapping,2009(3). |
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| Authors: | ZHANG Xiao-lin ZHAO Dong-ming WANG Qing-bin |
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| Institution: | Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China |
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| Abstract: | The point mass method was introduced for the local gravity field approximation.The construction of the model of point mass was discussed in detail.Gravity observations were used in the model construction.The characteristics of each layer of point mass in terms of diffraction error,effect of approximation were analyzed.Result showed that the disturbing gravity field was approximated accurately using the point mass method. |
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| Keywords: | point mass gravity anomaly gravity field approximation diffraction error disturbing gravity vector |
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