医疗卫生装备2012，Vol.33Issue(6)：8-10,3.
基于LabVIEW的微波热声信号采集及消噪处理
Acquisition and De-noising of Microwave-induced Thermo-acoustic Signals Based on LabVIEW
摘要
Abstract
Objective To design a method of multi -channel massive data-recording and de-nosing of thermo-acoustic signals with strong background noise for microwave-induced thermo-acoustic tomography. Methods A program based on LabVIEW was used to resolve the data acquisition and preservation problem. The digital filtering was realized through the mix programming of LabVIEW and C language in order to do the de -noising simulation experiments of the strong background noise in the thermo-acoustic signals. Results The average digital filtering could eliminate efficiently the noise in the microwave-induced thermo-acoustic signals and improve the signal to noise ratio(SNR). Conclusion The de-noising method can be used efficiently for the extraction and elimination of most periodic weak signals. [Chinese M6dicdl Equipment Journal,2012,33(6): 8-10]关键词
LabVIEW/热声信号/微弱信号/信噪比/数字平均Key words
LabVIEW/ thermo-acoustic signal/ weak signal/ signal to noise ratio(SNR)/ digital average分类
医药卫生引用本文复制引用
王华,焦腾,张杨,于霄,路国华,吕昊,张华,薛慧君..基于LabVIEW的微波热声信号采集及消噪处理[J].医疗卫生装备,2012,33(6):8-10,3.基金项目
陕西省自然科学基金项目(2011JM4034) （2011JM4034）
陕西省科技攻关项目(2010K13-02-01) （2010K13-02-01）
