导航卫星原子钟时域频率稳定性影响因素分析  

Analyses of Main Error Sources on Time-Domain Frequency Stability for Atomic Clocks of Navigation Satellites

作　　者：郭海荣[1,2] 杨元喜[3] 

机构地区：[1]北京市100094 [2]信息工程大学测绘学院,郑州市450052 [3]西安测绘研究所,西安市710054

出　　处：《武汉大学学报（信息科学版）》2009年第2期218-221,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40474001,40274002,40604003)

摘　　要：分析了影响原子钟时域稳定性的主要因素,主要包括测量分辨率噪声、相位跳变和频率峰值以及能量渗漏误差和截断误差等。研究了各种影响因素对时域稳定性的影响规律,推导了数学表达式,并给出了减小影响的方法。利用模拟数据进行了计算分析,验证了所提出方法的有效性。In order to have a good understanding of the characteristic of time-domain frequency stability for the atomic clock, the effects of the main error sources on the time-domain frequency stability were studied, including measurement resolution uncertainty, phase steps and frequency spikes, leakage errors and end-of-data, and so on. The approximate formulas for the effects of the main error sources are deduced. The characteristics of the effects are also analyzed. Then the corresponding methods for reducing the error sources are given. The validity of the methods is verified using simulated data.

关 键 词：原子钟 时域稳定性 能量渗漏误差 截断误差 

分 类 号：P245[天文地球—测绘科学与技术]