摘要
由于线圈的自感耦合作用,使瞬变电磁早期时间道信号严重失真。为研究瞬变电磁早期信号的特性,讨论多匝线圈与单匝线圈的自感系数的关系,得出线圈自感信号振幅的理论表达式,并推导出单匝和多匝回线的电感公式。分析瞬变电磁发射回线等效回路的暂态过程及感应电动势的产生和衰减规律。影响早期信号的因素为线圈自感信号,它的衰减不仅与时间有关,而且与等效回路的材料有关。该项研究对进一步研究瞬变电磁早期场的附加效应打下了基础,同时为提取早期数据的研究提供参考。
Because of the self-transition of the loop the early signal of TEM is greatly abnormal.In order to study the characteristics of the early signal with TEM,both self-induction formula of single coil and multiturn coils are given;the theoretical expressions of amplitude of loop self-induction signal is deduced,the induction of multi-axial coils is also given.The transient process of transient electromagnetic loop and the attenuation of induced voltages induced by many coils of loop are discussed,disturbed fact...
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2006年第S1期168-171,共4页
Journal of Jilin University：Earth Science Edition
基金
博士点基金项目(20050290501)
中国矿业大学青年科研基金(D200409)
关键词
瞬变电磁
线圈自感
暂态过程
信号衰减
transient electromagnet
self-induction of loop
self-transient course
signal decay
