物探化探计算技术2017，Vol.39Issue(3)：301-305,5.DOI:10.3969/j.issn.1001-1749.2017.03.01
基于最小泛函的CSAMT视电阻率计算方法
Based on the minimum functional calculation method of the CSAMT apparent resistivity
摘要
Abstract
The calculation of the apparent resistivity in time domain of controlled source electromagnetic method is widely used in geophysical exploration for its low time costing, which could quickly acquire the distribution of the ground resistivity.The conventional apparent resistivity calculating algorithm uses the root of the response function of the uniform half-space electromagnetic field without considering the effect of the noise in the raw data on the apparent resistivity as a whole.In this paper, we proposed a method to calculate the apparent resistivity in time domain for controlled-source electromagnetic method by using the optimization theory to solve the variational problem of specific target functional.The fitting accuracy of field data is considered as a whole in one section.The method has been used in field operation, and acquired more acceptable result than those of the conventional calculation.关键词
CSAMT/视电阻率/时间域/最小泛函视电阻率算法/最优化理论Key words
CSAMT/apparent resistivity/time domain/minimal functional apparent resistivity method/optimization theory分类
天文与地球科学引用本文复制引用
杨轮凯,胡建,叶景艳,肖明辉,杨华忠..基于最小泛函的CSAMT视电阻率计算方法[J].物探化探计算技术,2017,39(3):301-305,5.基金项目
江苏省地质勘查专项资金项目(苏财建140) （苏财建140）
