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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 FOG, a dynamic Allan variance method is proposed to analyze the dynamic error of the FOG test.According to the principle of the window function in the dynamic Allan variance method, the effect of different window lengths on the dynamic error analysis results is discussed. , And provides the analysis results of single swinging movement and two compound swinging movements.From the analysis of fluctuations of variance in the figure, it can be seen that the dynamic Allan variance method can accurately reflect the instability factors such as sudden change and periodic change in dynamic error , Can clearly identify different swing hidden in the dynamic error.The theoretical analysis and experimental results show that the dynamic al-lan variance method is very suitable for the analysis of the dynamic characteristics of fiber optic gyroscope.