基于Labview实现二频机抖激光陀螺角随机游走系数的计算

国军标法和Allan方差法是目前用于计算二频机抖激光陀螺角随机游走系数最常用的两种方法,基于Labview对两种方法分别编程并予以实现,计算结果表明两种方法计算出来的结果几乎相等,具有等价性;但在数据处理的过程中发现用国军标法得到的拟合系数有时为负,针对这一现象通过理论分析发现目前数据处理方法的不完善是导致国军标法拟合系数有时为负的根本原因,对现有方法提出改进并基于Labview编程实现,实验结果表明：改进后的数据处理方法不仅解决了国军标法拟合系数有时为负这一问题,而且拟合误差降低了近一个数量级。

Methods of calculating random walk coefficient of dithered laser gyro based on Labview

The methods of China national military standard and Allan variance are two commonly used methods to calculate the random walk coefficient of a dithered laser gyro, and they were realized based on Labview. The experiments show that the results of the two methods are very close and could be replaced. However, during the data processing with China national military standard, the coefficient sometimes is negative. Theoretical analysis shows that the current data processing method of China national military standard is the reason that result in the negative phenomenon. In this paper, some modifications are proposed and realized through Labview. The results show that the modified data processing method can not only solve the problem of negative fitting parameters, but also greatly reduce the fitting error.