摘要
简要介绍瞬变电磁法的基本原理,研究了二次场感应信号的特征和常用的采样方法,设计了以FPGA为主逻辑控制器、DSP为数据处理核心的接收机方案,利用直接取样与取样积分结合的大动态信号检测方法,提高了瞬变接收机早期信号的瞬态响应性能和中晚期微弱信号的提取能力,并用同步叠加平均方法改善了信噪比。
The principle of Transient electromagnetic（TEM） method and the characteristic of the Induction signal from the TEM secondary field are introduced in this paper. FPGA and DSP are used as the main logical controller and data processing core respectively in the design scheme of the TEM receiver. A high-dynamic signal detect method base on direct sampling and sampling integral method is used to improve the transient response and the weak signal detection capacity of the receiver. The synchronous superposition and averaging method is used to improve the SNR of the receiver.
作者
叶金才
王小红
姚荣彬
唐欣
YE Jin-cai;WANG Xiao-hong;YAO Rong-bin;TANG Xin(Guilin University of Electronic Technology,Guilin 541004,China;Guangxi University of Science and Technology,Liuzhou 545006,China)
出处
《通信电源技术》
2018年第4期26-28,共3页
Telecom Power Technology
基金
广西无线宽带通信处理重点实验室主任基金项目(GXLK0614107)
关键词
瞬变电磁
FPGA
取样积分
同步叠加平均
transient electromagnetic
FPGA
sampling integral
synchronous superposition and averaging
