摘要
偏置漂移使得激光陀螺输出信号产生较大偏置误差,准确地辨识漂移并有效地对其进行补偿,直接关系到激光陀螺的测量精度。为了提高激光陀螺的精度,研究了光路温度特性对激光陀螺零偏的影响。通过大量的重复性高低温实验,利用最小二乘法证明了光强与温度的线性关系,得到了拟合直线表达式,并分析了利用光强对陀螺零偏的补偿效果。提出了从硬件设计上进行改进的方法。结果表明,利用软硬件相结合的方式对陀螺的零偏进行补偿,可以提高陀螺的精度。
Bias drift is an indispensable factor causing big biasing error in the ring laser gyroscope（RLG）.How to identify and compensate this error relates directly to the measurement accuracy of RLG.In order to compensate the bias of RLG,the effect of temperature characteristic of light path to RLG′s bias was studied.It was proved that the light intensity is proportional linearly to the temperature of RLG with the method of least square via lots of high-low temperature experiment repeated,and the linear expression was achieved.Also,the compensation effect of light intensity to bias of RLG was analyzed.The improved method was proposed through proper design of hardware circuit.Since the RLG＇s bias is affected by the temperature,the RLG＇s precision can be improved by temperature compensation and improving light path stability.
出处
《红外与激光工程》
EI
CSCD
北大核心
2011年第12期2393-2397,共5页
Infrared and Laser Engineering
基金
国防预研基金(51309050301)
关键词
机抖激光陀螺
光路稳定
最小二乘法
温度补偿
mechanically dithered RLG
light path stabilization
method of least square
temperature compensation
