基于SVM的激光陀螺温度误差建模与补偿方法  

Modeling and compensation method for temperature error of laser gyroscope based on support vector machine

作　　者：程骏超[1] 房建成[1] 吴伟仁[1,2] 李建利[1] 

机构地区：[1]北京航空航天大学惯性技术重点实验室新型惯性仪表与导航系统技术国防重点学科实验室,北京100191 [2]探月与航天工程中心,北京100037

出　　处：《仪器仪表学报》2013年第4期721-727,共7页Chinese Journal of Scientific Instrument

基　　金：国家"973"高科技发展计划(2009CB724002);国家自然科学基金(60825305;61121003;60904093)资助项目

摘　　要：激光陀螺误差决定了机载全成孔径雷达(SAR)运动补偿用位置姿态测量系统(POS)的测量精度。针对激光陀螺测量精度受环境温度影响严重的问题进行了研究,分析了激光陀螺的温度误差模型,结合支持向量机SVM的函数拟合功能,提出一种新的陀螺温度误差建模与补偿方法。与基于线性回归以及神经网络的补偿方法相比,该方法具有精度高、泛化能力强等优点。实验结果表明,激光陀螺的温度误差减小约75%,提高了激光陀螺对环境温度的适应能力。Laser gyroscope error determines the measurement accuracy of position and orientation system （POS） used for airborne SAR motion compensation. The problem of the severe influence of environmental temperature on laser gy- roscope measurement accuracy is studied;the temperature error mathematical model of laser gyroscope is analyzed. Based on the function fitting capability of support vector machine （SVM）, a new modeling and compensation method for gyroscope temperature error is proposed. Compared with the compensation methods based on linear regression or neural network, the new method has the advantages of higher precision and generalization performance. Experiment results demonstrate that the proposed method could decrease the temperature error of laser gyroscope by 75% and promote its adaptability of laser gyroscope towards environmental temperature.

关 键 词：激光陀螺 温度误差 支持向量机 标定 误差补偿 

分 类 号：TH89[机械工程—仪器科学与技术]