东南大学学报（自然科学版）2016，Vol.18Issue(3)：489-493,5.DOI:10.3969/j.issn.1001-0505.2016.03.006
数字闭环光纤陀螺振动噪声处理方法
Vibration noise processing method for digital closed-loop fiber optic gyroscope
摘要
Abstract
To solve the problem that the digital closed-loop fiber optic gyroscope (FOG)is easily affected by environmental factors such as shock,vibration and so on in practical engineering applica-tions,the vibration noise model for the FOG signal is established based on the analysis of the output signal characteristics under the influence of vibration and the study of the effects of vibration on the stresses in the fiber coil and the additional phase in the signal.First,a modified local mean decom-position (LMD)method with self-adaptive ability is introduced to decompose the signal to a series of harmonic waves according to the frequencies.Secondly,the kernel principal component analysis (KPCA)method is used to separate the valid signal which reflects the vibration effects from noise. Then,the signal with the eliminated vibration errors is obtained after reconstruction.The vibration characteristics of the FOG in the vehicle-mounted and airborne environments are studied by the line vibration experiments,and ten groups of vibration experimental data are collected and analyzed.The results show that the error coefficients including the quantization noise and the bias instability in Al-lan variance analysis results of the signal after processing decrease by about 50%,thus improving ef-fectively the output accuracy of the FOG in vibration environment.关键词
光纤陀螺/振动误差/核主成分分析Key words
fiber optic gyroscope/vibration error/kernel principle component analysis分类
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宋锐,陈熙源..数字闭环光纤陀螺振动噪声处理方法[J].东南大学学报（自然科学版）,2016,18(3):489-493,5.基金项目
2012年度国家社科基金一般项目“境遇道德选择理论在生命伦理学的应用研究”（12BZX075）、2010年国家哲学社会科学重大招标项目“现代伦理学诸理论形态研究”（10AZX004）阶段性成果。 （）
