Welch法估计半导体核辐射探测器1/f噪声参数  

1/f Noise Parameters Estimation in Semiconductor Nuclear Radiation Detector Based on Welch Method

作　　者：李懋 刘国福[1] 季利锋 郭子成 

机构地区：[1]国防科技大学仪器科学与技术系,长沙410073

出　　处：《核电子学与探测技术》2017年第6期623-627,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11375264)资助

摘　　要：介绍了1/f噪声的基本特征以及周期图法与Welch法的基本原理。设计并搭建了基于嵌入式开发平台的噪声仿真测试系统,通过实验分析了数据段间重叠度对参数估计的影响,并比较了Welch法与周期图法的估计性能。结果表明:基于Welch谱估计的1/f噪声参数估计方法性能更好,更适用于白噪声背景下的1/f噪声参数估计。The basic characteristic of 1/f noise,the principle of periodogram method and the principle of Welch method were introduced. The noise simulation and detection system based on embedded platform was designed and built. By experiment,the influence of overlap on estimation was analyzed,and the estimation performance of the periodogram method and the Welch method was compared. The results indicate that the estimation performance of Welch method is superior and is more applicable to estimate the parameters of 1/f noise in white noise background.

关 键 词：1/f噪声 半导体器件 核辐射探测器 Welch谱估计 

分 类 号：TN307[电子电信—物理电子学]