基于比时法的晶振频率测量建模与分析  

Modeling and Analysis of Crystal-oscillator Frequency Based on Measuring Time

作　　者：李二鹏[1] 文开章[1] 汪为伟[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《现代电子技术》2010年第3期119-121,共3页Modern Electronics Technique

摘　　要：受器件老化、随机噪声等因素影响,晶振频率变化较复杂。以GPS秒脉冲作为测量标准,构建了晶振频率随时间变化的测量系统,通过对测量数据进行一元回归统计处理,分离出了晶振实际频率与其标称频率的相对偏差及晶振的各种随机误差,并分析了这两种误差对晶振准确度及稳定度的影响。该方法可为频率源误差测量分析提供借鉴作用。The characteristics of oscillator frequency error are very complex owing to the aging and stochastic noise. The system measure model of crystal oscillator frequency error is designed with GPS as frequency standard. A method of regression analysis is used for disposing the oscillator frequency error data and separating the linearity excursion error from the stochastic error. Both two errors are analyzed in contribution of the crystal oscillator stabilization and precision. This mean is provided with reference in frequency criterion error of measure and analysis.

关 键 词：GPS 晶振 频率 误差 回归分析 

分 类 号：TM930[电气工程—电力电子与电力传动]