摘要
高密度电法通过电极供电、测量电流和电压,采集视电阻率数据。在采集数据过程中,由于某些操作或仪器原因,往往使数据中包含人为错误,或外界干扰产生的量值较大的“过失误差”以及不可避免的带随机性质且量值较小的“偶然误差”。数据预处理的任务就是,限制“过失误差”和压制“偶然误差”对反演结果的影响。这里分析了误差产生的原因及电阻率数据处理的特点,比较人工处理与计算机程序处理的差异,根据几种算法编写出不同的数据处理程序,对算例进行误差限制处理,并对处理结果进行了分析对比研究。
The high density resisitivity method through electrode power supply,surveys electric current and voltage,gathers apparent resistivity data.Because of fault in operation and the precision of instrument,the defect error and accidental error are involved in the procession of data collection,the defect error that are brought by mistakes of people and influence of outside is large,the contingency error that are inevitably and randomicity is little.The mission of computer is to limit the defect error,suppress the accidental error and minimizes the influence of these errors to the inversion result.This Paper analyzes the reason of error's appearance and tie characters of the method of resistivity processing,compares the manual work with computer calculate program,gives out several data-perprocessing programs which base on different arithmetics for the procession of error-limitation,and study the results of procession.
出处
《物探化探计算技术》
CAS
CSCD
2006年第4期328-331,共4页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
高密度电法
过失误差
偶然误差
预处理
high density resistivity method
defect error
accidental error
preprocess
