| 重复中位数估计Robust算法在长周期大地电磁中的应用 |
| |
| 引用本文： | 张刚,王绪本,张伟,罗皓中,罗威.重复中位数估计Robust算法在长周期大地电磁中的应用[J].物探与化探,2011,35(6):813-816,828. |
| |
| 作者姓名： | 张刚 王绪本 张伟 罗皓中 罗威 |
| |
| 作者单位： | 成都理工大学地球探测与信息技术教育部重点实验室,四川成都,610059 |
| |
| 基金项目： | 国家863高技术研究发展计划项目 |
| |
| 摘 要： | 将基于重复中位数估计的Robust算法应用于长周期大地电磁阻抗张量估算中。与传统Robust估计(M估计)相比,重复中位数估计求解过程不需要重设参量,并且提高了算法对时间域原始资料中噪声干扰的容限,使算法的理论崩溃值从30%提高到50%,也能得到准确的估算结果。龙门山地区实测资料的处理结果表明,基于重复中位数估计的Robust算法应用于阻抗张量的求解具有较强的优越性。
|
| 关 键 词： | 长周期大地电磁 阻抗张量 重复中位数估计 Robust算法 |
THE APPLICATION OF Robust ALGORITHM BASED ON REPEATED MEDIAN ESTIMATOR IN THE LONG-PERIOD MAGNETOTELLURIC SURVEY |
| |
| ZHANG Gang,WANG Xu-ben,ZHANG Wei,LUO Hao-zhong,LUO Wei.THE APPLICATION OF Robust ALGORITHM BASED ON REPEATED MEDIAN ESTIMATOR IN THE LONG-PERIOD MAGNETOTELLURIC SURVEY[J].Geophysical and Geochemical Exploration,2011,35(6):813-816,828. |
| |
| Authors: | ZHANG Gang WANG Xu-ben ZHANG Wei LUO Hao-zhong LUO Wei |
| |
| Institution: | ZHANG Gang,WANG Xu-ben,ZHANG Wei,LUO Hao-zhong,LUO Wei(Key Laboratory of Geo-Detection & Information Techniques of Ministry of Education,Chengdu University of Technology,Chengdu 610059,China) |
| |
| Abstract: | With the broadband signal,weak signal energy and small magnitude in comparison with the tradition MT,the long-period magnetotelluric survey has a higher data processing requirement.In this paper,the Robust algorithm based on repeated median estimator was applied to long-period magnetotelluric impedance tensor estimates.Compared with the Robust maximum likelihood estimate(M estimate),the repeated median estimator has no need of reset parameters in data processing,and can increase the estimate of the breakdow... |
| |
| Keywords: | long-period magnetotelluric survey impedance tensor repeated median estimator Robust |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
