摘要
在伪随机编码信号的相关辨识理论基础上,根据可控源音频大地电磁法(CSAMT)测量频率范围及受环境电磁干扰影响的程度,将CSAMT测量划分为三个频段,对易受工频及其谐波成分干扰的频段采用伪随机编码发射,高频和低频段采用单频方波发射。发射系统的人机交互和供电波形的产生基于虚拟仪器LabVIEW(Laboratory Virtual Instrumentation Engineering Workbench,实验室虚拟仪器工程平台)软件平台,操作方便、控制灵活。
On the basis of the relevant identification theory of pseudo-random code signal,the signals of CSAMT（Controlled Source Audio-Frequency Magneto Tellurics）are divided into three parts according frequency range and the extent affected by environmental electromagnetic interference.The signals are susceptible to 50 Hz interference signal and its harmonic components should be set by pseudo-random code way.Others are set by single square waveform way.The human-computer interaction and waveform generated software of the transmitter system is built on the advanced virtual instrument platform,LabVIEW（Laboratory Virtual Instrumentation Engineering Workbench）.The software is easy to operation and flexible to control.
出处
《物探化探计算技术》
CAS
CSCD
2016年第2期175-179,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家高技术研究发展计划863计划(2015AA06A610)
国家自然科学基金项目(41504063)
中央级公益性科研院所基本科研业务费项目(AS2012J08)
国家重大科学仪器设备开发专项(2011YQ050060)
