【作者】 刘京； 陈国衡； 杨生；

【Author】 LIU Jing~1 CHEN Guo-heng~1 YANG Sheng~2 (1.No.814 Party of East China Geological Exploration Bureau of Nonferrous Metals,Jiangsu Province,Zhenjiang 212005,Jiangsu; 2.Beijing Zhongse Geophysical Exploration Company Ltd.,Geological Investigation Center for Nonferrous Metals,Beijing 100073,China)

【机构】 江苏省有色金属华东地质勘查局814队； 有色金属矿产地质调查中心北京中色物探有限公司；

【摘要】 采用层状介质的大地电磁响应函数拟合实测的原始资料(视电阻率和阻抗相位),将其实测值与理论值作比较,把方差最大的一个实测资料判定为飞点,并剔除后组成新的原始资料序列,进行第二次拟合,剔除第二个飞点, 反复上述过程,直到参加拟合的所有实测数据与理论数据均小于一个确定的精度值,最终的拟合曲线就是实测资料的圆滑去噪曲线。结果表明,该方法是在全频范围内进行去噪处理的,避免了窗口函数圆滑法对误差的承袭,有效地消除了资料中的飞点。整个去噪过程自动实施．不存在人为随意性,且速度快,效率高、适用于批量资料处理。更多还原

【Abstract】 Using magnetotelluric response function of layered media to fit the source data(apparent resistivity and impedance phase), comparing the value of measured data with the value of theory data,considering the measured data whose variance is the largest as a fly- ing-spot,eliminating and recombining it to form a series of new data,we repeat them until all variances of measured data and academic data are less than a certain value,the last fitting curve is the smooth and noiseless curve of the measured data.Since this method pro- ceed in the whole frequency,it avoid the following errors such as using the window function to smooth data and remove the flying-spots in the source data.All of the progress is automatic.It is a rapid and effective method for the processing of batch dada.更多还原