开环光纤陀螺随机噪声特性研究

采用A llan方差法对光纤陀螺输出的随机噪声特性进行分析,建立噪声模型以便于在应用过程中更好地降低输出噪声。搭建陀螺数据采集的硬件平台,对光纤陀螺进行长时间测试,陀螺的输出数据进行去野值处理后应用A llan方差方法辨识其中包含的噪声,并对各种噪声的统计特性进行估计。进行重复性试验,综合多次试验的结果得出光纤陀螺的噪声模型——主要包括量化噪声和角度随机游走。

Research of random noise characteristics of open-loop FOG

Allan variance method is used to analyze the random noise characteristics of FOG,and through it yawp model is established to reduce the influence of output noise.A data gathering system is designed for the data collecting of FOG.FOG is tested for a long time,and the obvious wrong values in its output are removed.The test data are analyzed with Allan variance method and each error coefficient is identified.Furthermore,exactitude coefficients can be obtained through repetition test.Quantification noise and angular random walk are main part of random noise.