摘要
为了根据离散观测数据构制连续空间重力变化图像，分析和讨论了３种数值插值方法，计算结果表明多面函数方法插值精度最高。由于逐步回归分析筛选核函数中心点的计算繁琐，文中提出根据分形理论和Ｓｈａｎｎｏｎ取样定理来确定核函数中心点。对滇西试验场进行模拟试算，插值精度可达到４～５（１０－８ｍｓ－２）。
In this paper,three kinds of numerical interpolation methods are analyzed in order to get graphic representation for spacial gravity changes from disperse data.The results show that the polyhedral function is with higher interpolation precision.For complication of central points of the kernel functions through regression analysis,it is advised that the central points are determined by fractal theory and Shannon's theorem.As an example,the gravity field of the western Yunnan province is computated and the accuracy of 4～5(10 -8 ms -2 ) is obtained.
出处
《地壳形变与地震》
CSCD
1997年第2期59-64,共6页
Crustal Deformation and Earthquake
关键词
重力图
数值模拟
插值法
重力勘探
gravimetric map,numerical simulation,interpolation method
