物探与化探2011，Vol.35Issue(6)：813-816,828,5.
重复中位数估计Robust算法在长周期大地电磁中的应用
THE APPLICATION OF Robust ALGORITHM BASED ON REPEATED MEDIAN ESTIMATOR IN THE LONG-PERIOD MAGNETOTELLURIC SURVEY
摘要
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 breakdown point up to 50% and get an unbiased estimate of impedance tensor. An application example shows that the Robust algorithm based on repeated median estimator has a strong advantage in the solution of the impedance tensor.关键词
长周期大地电磁/阻抗张量/重复中位数估计/Robust算法Key words
long-period magnetotelluric survey/impedance tensor/repeated median estimator/Robust分类
天文与地球科学引用本文复制引用
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):813-816,828,5.基金项目
国家863高技术研究发展计划项目(2006AA06Z110) （2006AA06Z110）
