基于盲目反卷积算法的核脉冲信号处理  

Nuclear pulse signal processing technique based on blind deconvolution method

作　　者：洪鹏飞[1] 杨磊[1] 付廷岩[1] 祁中[1] 任忠国[1,2] 李东仓[1] 

机构地区：[1]兰州大学核科学与技术学院,兰州730000 [2]中国工程物理研究院,绵阳621900

出　　处：《核技术》2012年第10期775-779,共5页Nuclear Techniques

基　　金：国家自然科学基金(11075069);中央高校专项基金(lzujbky-2011-14)资助

摘　　要：提出一种新的核脉冲信号测量分析方法,采用盲目反卷积算法,在线去除采集信号的堆积,恢复基线,还原核脉冲信号。系统采用FPGA控制高速ADC对核辐射信号连续采样,上位机通过USB2.0通讯,采用具有高速传输特性的Slave FIFO模式实现数据实时采集,利用NI LabVIEW软件平台实现算法处理与显示。结果表明,该方法具有传输速度快、能实时测量与显示等优点。In this paper, we present a method for measurement and analysis of nuclear pulse signal, with which pile-up signal is removed, the signal baseline is restored, and the original signal is obtained. The data acquisition system includes FPGA, ADC and USB. The FPGA controls the high-speed ADC to sample the signal of nuclear radiation, and the USB makes the ADC work on the Slave FIFO mode to implement high-speed transmission status. Using the LabVIEW, it accomplishes online data processing of the blind deconvolution algorithm and data display. The simulation and experimental results demonstrate advantages of the method.

关 键 词：核脉冲 FPGA USB2.0 LABVIEW 盲目反卷积 

分 类 号：TL822[核科学技术—核技术及应用]