物探与化探2016，Vol.40Issue(4)：816-819,4.DOI:10.11720/wtyht.2016.4.28
一种物探仪器系统特性高精度标定方法
A high accuracy calibration method for geophysical prospecting instrument system characteristics
摘要
Abstract
The high accuracy calibration method for the system characteristics of geophysical prospecting instruments based on correla⁃tion identification is proposed in this paper.The inverse repeated M sequence is used as the excitation signal,the measurement channel of the instrument is disturbed with encoded input current,the excitation current and instrument response output in time series is recor⁃ded according to the same sampling rate,and then circular cross⁃correlation method is used to obtain the instrument system frequency response.The simulation results show that the frequency resolution of the instrument system is improved by using the method based on encoding source,the multi⁃period excitation can significantly improve the accuracy of identification,and the right sampling rate is also helpful to improving the accuracy of identification,but it should match with the system data storage capacity.关键词
仪器标定/逆重复M序列/循环互相关/频率响应Key words
instrument calibration/inverse repeated M sequence/circular cross correlation/frequency response分类
天文与地球科学引用本文复制引用
罗维斌,李梅,韩海涛,高曙德..一种物探仪器系统特性高精度标定方法[J].物探与化探,2016,40(4):816-819,4.基金项目
国家自然科学基金“相关辨识技术在谱激电中的应用研究”项目（41374185）；国家自然科学基金项目（41174059）；甘肃省地震局科技发展野外站基金项目（2014Y03）联合资助 （）
