Noise Calculation and analysis of a search coil magnetometer

摘要：

For expertise on detecting very weak signal, search coil magnetometer is widely used in Magnetotellurics (MT). Unfortunately, noise is a primary factor affecting the sensitivity. In this work, noise model of the magnetometer is presented based on measured parameters, where transfer function affected by core eddy current loss is considered. Calculation is imposed on the model, and noise frequency response is obtained. After frequency dependent noise discussion, many suggestions to reduce the noises are presented. This work is useful for further study to obtain low noise search coil magnetometer.

关键词： search coll magnetometer magnetic feedback eddy current loss noise magnetotellurics (MT)

作者: Zhao Yifei Guo Shuxu Zhang Shuang Chen Shudong Lin Jun

作者单位: College of Electronic Science and Engineering Jilin University Changchun, China College of Instrument Science and Electrical Engineering Jilin University Changchun, China

会议类型: 国际会议

会议名称: The 2010 International Conference on Computer Application and System Modeling(2010计算机应用与系统建模国际会议 ICCASM 2010)

会议地点: 太原

会议语种:英文

页码: 306-309

在线出版日期: 2010-10-22（万方平台首次上网日期，不代表论文的发表时间）