基于动态Allan方差的光纤陀螺动态特性分析  

Analysis of dynamic characteristics of a fiber-optic gyroscope based on dynamic Allan variance

作　　者：李绪友[1] 张娜[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2011年第2期183-187,共5页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(60604019)

摘　　要：为了研究光纤陀螺的动态特性,提出采用动态Allan方差法对光纤陀螺测试得到的动态误差进行分析.根据动态Allan方差法中窗函数的原理,讨论了不同窗口长度对动态误差分析结果的影响.并且,提供了单一摇摆运动和两种复合摇摆运动的分析结果.从分析图中方差的起伏变化可以看出,动态Allan方差法可以准确地反映动态误差里的突变和周期性变化等非稳定性因素,能够清晰地辨识出隐藏在动态误差里的不同摇摆状态.由理论分析和实验结果可知,动态Al-lan方差法对光纤陀螺的动态特性分析是非常适用的.In order to study the dynamic characteristics of a fiber-optic gyroscope,it was proposed that the dynamic error which had been obtained by testing a fiber-optic gyroscope be analyzed by dynamic Allan variance.According to the principle of window function in the dynamic Allan variance method,the analysis results of the dynamic error were discussed under the different window length conditions.Furthermore,a kind of single sway movement and two kinds of composite sway movement were analyzed by the dynamic Allan variance method and their results were provided.There was fluctuating variation of variance in the analysis figures,by which the various non-stationary factors in the dynamic error such as mutation and periodic variation were accurately reflected,and the different sway states hidden in the dynamic errors were clearly identified.Both the theoretical analysis and experimental results indicate that the dynamic Allan variance method is very applicable for analyzing the dynamic characteristics of a fiber-optic gyroscope.

关 键 词：光纤陀螺 动态特性 动态Allan方差 动态误差 

分 类 号：TN253[电子电信—物理电子学]