首页 | 本学科首页   官方微博 | 高级检索  
     

一种计算时基失真估计不确定度的新方法
引用本文:张喆,林茂六,陈春雨.一种计算时基失真估计不确定度的新方法[J].哈尔滨工业大学学报,2007,39(1):77-80.
作者姓名:张喆  林茂六  陈春雨
作者单位:哈尔滨工业大学,电子与通信工程系,哈尔滨,150001
基金项目:国家自然科学基金 , 高等学校博士学科点专项科研项目 , 黑龙江省自然科学基金
摘    要:提出一种计算时基失真估计不确定度的新方法,讨论了时基失真估计过程中权值计算,理论推导以及仿真实验表明:只要谐波幅度比较小,多次谐波信号的方差都可以用含有基波方差来代替;给出了一种新的时基失真不确定度的定义以及一种实用的时基失真估计不确定度的计算方法.仿真实验验证了这个近似的估算公式的合理性以及可应用性.抖动方差以及加性噪声方差对时基失真估计的不确定度有一定的影响.

关 键 词:不确定度  时基失真  处理内方差  处理间方差  均方根误差
文章编号:0367-6234(2007)01-0077-04
修稿时间:2004-12-17

A new method for calculating an uncertainty of time-base distortion estimation
ZHANG Zhe,LIN Mao-liu,CHEN Chun-yu.A new method for calculating an uncertainty of time-base distortion estimation[J].Journal of Harbin Institute of Technology,2007,39(1):77-80.
Authors:ZHANG Zhe  LIN Mao-liu  CHEN Chun-yu
Affiliation:Dept. of Electronics and Communication, Harbin Institute of Technology, Harbin 150001, China
Abstract:This paper study a formula of signal variance used in the estimation of time-base distortion.The signal variance having many harmonics can be replaced by the signal variance having fundamental.This paper also introduces a new definition of the uncertainty of TBD and a new practical method for calculating the uncertainty of TBD.This method is more reasonable and practical than the formal method through the simulation experiments.Then the effect on the uncertainty of TBD is studied by the additive noise and the jitter noise.The additive noise has little effect on the between processing uncertainty.The jitter noise has effect on both between processing uncertainty and within processing uncertainty.
Keywords:uncertainty  time-base distortion  within-processing variance  between-processing variance  root mean square error
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号