基于温度变化的测地激光陀螺相对误差分析  

Relative error analysis of geodesic laser gyroscope based on temperature change

作　　者：杨哲 郭文阁[1,2] 张立松 武威 高玉平 张首刚 YANG Zhe;GUO Wenge;ZHANG Lisong;WU Wei;GAO Yuping;ZHANG Shougang(College of Science,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China;College of Electronic Engineering,Xi'an Shiyou University,Xi'an,Shanxi 710065,China;Key Laboratory of Time and Frequency Primary Standards,National Time Service Center,Chinese Academy of Sciences,Xi'an,Shaanxi 710600,China)

机构地区：[1]西安石油大学理学院,陕西西安710065 [2]西安石油大学电子工程学院,陕西西安710065 [3]中国科学院国家授时中心时间频率基准重点实验室,陕西西安710600

出　　处：《光电子．激光》2023年第10期1084-1090,共7页Journal of Optoelectronics·Laser

基　　金：中科院西部之光项目(中科院人字(2018)6号文件);西安石油大学研究生创新与实践能力培养计划项目(YCS21212153,YCS21212116,YCS21212118)资助项目。

摘　　要：大型测地激光陀螺是一种基于Sagnac效应的惯性传感器,能够精确监测地球自转角速度,在世界时、地震波检测以及基础物理等领域都有很好的应用前景。测地激光陀螺对环境温度的变化较为敏感,温度变化使测地激光陀螺的腔长发生改变,进而引起尺度因子的改变,最终影响到测地激光陀螺仪的测试精度。本文通过对测地激光陀螺的不同工作环境进行温度测试,当温度变化并且热源位置不同时,分析并讨论了测地激光陀螺的相对误差。当温度变化最大时,分析了激光陀螺环形腔材料使用量与相对误差的关系。结果表明:当实验室的温度变化最大时,蒲城实验室的工作环境优于临潼实验室的工作环境,不同构型测地激光陀螺相对误差的范围在10-6—10-9。当测地激光陀螺仪中微晶玻璃的使用量增加时,相对误差减小。Large geodesic laser gyroscope is an inertial sensor based on Sagnac effect,which can accurately monitor the angular velocity of the earth rotation.It has a good application prospect in the fields of universal time,seismic wave detection and fundamental physics.The geodesic laser gyroscope is sensitive to the change of ambient temperature.The change of temperature changes the cavity length of the geodesic laser gyroscope,and then causes the change of the scale factor,and finally affects the test accuracy of the geodesic laser gyroscope.In this paper,the relative error of geodesic laser gyroscope is analyzed and discussed by measuring the temperature in different working environments when the temperature changes and the heat source location is different.When the temperature change is maximum,the relationship between the material usage and the relative error of the ring cavity of the laser gyroscope is analyzed.The results show that the working environment of Pucheng Laboratory is better than that of Lintong Laboratory when the temperature change in the laboratory is the largest,and the relative error of different configurations of geodesic laser gyro ranges from 10-6 to 10-9.The relative error decreases when the amount of Zerodur is increased in geodesic laser gyroscope.

关 键 词：温度 测地激光陀螺 构型 腔长的相对误差 面积的相对误差 

分 类 号：TN243[电子电信—物理电子学] TN249