机械抖动偏频激光陀螺静态测角方法  

Static angle measurement based on mechanically dithered ring laser gyro

作　　者：谢元平[1] 于旭东[1] 魏国[1] 龙兴武[1] 罗晖[1] 黄云[1] 万志毅 

机构地区：[1]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2016年第3期135-140,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(61503399)

摘　　要：阐述采用机械抖动偏频激光陀螺进行静态角度测量的原理,分析测角随机误差与激光陀螺角随机游走系数、测量时间的关系,通过转台分度误差实验验证了测角随机误差公式。采用排列互比法对测角系统误差和转台分度误差进行分离。实验与理论分析表明,静态测角方法具有良好的环境适应性和稳定性,测角随机误差优于0.26″,系统误差优于1″。最后分析了进一步减小测角随机误差和系统误差的措施。The principle of static angle measurement based on mechanically dithered ring laser gyro was described. The expression of angle measurement random error with gyro＇ s angle random walk coefficient and measurement time was analyzed and verified by checking the indexing errors of turntable. The systematic error of static angle measurement and the indexing errors of turntable were separated by using the permutation intercomparison method. Test results and analysis show that the static angle measurement method is robust under practical environment,the standard deviation of random error is less than 0. 26″ and the systematic error is less than 1″. The key techniques for further improvement in accuracy were analyzed.

关 键 词：角度测量 机械抖动偏频激光陀螺 随机误差 系统误差 排列互比法 分度误差 

分 类 号：TH741.2[机械工程—光学工程]