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。
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.
出处
《测绘科学技术学报》
北大核心
2009年第3期212-215,219,共5页
Journal of Geomatics Science and Technology
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
point mass
gravity anomaly
gravity field approximation
diffraction error
disturbing gravity vector
