CAJ | 학술논문

为定量描述光纤陀螺( FOG)测试信号中各误差分量的动态变化过程,分析了多个随机信号处理方法的优缺点,指出了常用Allan方差分析不能辨识FOG信号非平稳性因素的不足,提出采用动态Allan方差( DAVAR)对FOG信号动态特性进行分析,采用二维表示法定量描述FOG各主要噪声项变化过程。实验结果表明,DAVAR能够反映FOG数据的非平稳特性；利用二维表示的方法,可准确地反映动态误差中各噪声项的变化特征。新的方法可作为FOG信号非平稳性分析的一种定量评价工具,为研究各干扰因素对FOG组成系统精度的影响提供理论参考和评价依据。
위정량묘술광섬타라( FOG)측시신호중각오차분량적동태변화과정,분석료다개수궤신호처리방법적우결점,지출료상용Allan방차분석불능변식FOG신호비평은성인소적불족,제출채용동태Allan방차( DAVAR)대FOG신호동태특성진행분석,채용이유표시법정량묘술FOG각주요조성항변화과정。실험결과표명,DAVAR능구반영FOG수거적비평은특성；이용이유표시적방법,가준학지반영동태오차중각조성항적변화특정。신적방법가작위FOG신호비평은성분석적일충정량평개공구,위연구각간우인소대FOG조성계통정도적영향제공이론삼고화평개의거。
To quantitatively describe the dynamic process of each error component in fiber optical gyro ( FOG) sig-nal, some random signal processing methods were studied. Deficiency was pointed out that non-stationary factors can not be recognized for FOG data in Allan variance method. A method as dynamic Allan variance ( DAVAR) was proposed for the analyais of the dynamic characteristics of FOG data, and a two-dimensional method for the quanti-tative description of the main noise change. The experimental results show that DAVAR can recognize the non-sta-tionary characteristics of FOG data, and the two-dimensional representation method can accurately reflect the change characteristics of the noise term. The new method can be seen as a quantitative evaluation tool for the non-stationary analysis of FOG data. It can provide theoretical reference and evaluation basis for study on the accuracy of the system in various interference factor conditions.