对传统方法中以抖动偏频量和抖动激励信号中的噪声强度来表示机抖激光陀螺抖动参数的方法进行了改进,以K参数和抖动幅度中的噪声强度来表示机抖激光陀螺的抖动参数,从而使不同抖动频率和注入效率的陀螺具有相同的比较标准。定量讨论了K参数与抖动幅度中噪声强度的大小对机抖激光陀螺零偏稳定性和角随机游走的影响。实验结果表明,当K参数取600-650之间、抖动幅度中的噪声强度取2%-3%之间时,机抖激光陀螺的零偏稳定性和角随机游走可以达到比较理想的状态。

New dither parameters which consist of K coefficient and the noise intensity in the dither amplitude are proposed to replace the traditional ones which consist of oscillating bias amplitude and the noise intensity in the dither drive signal.The improvement provides a same criteria for laser gyros with different dither frequencies and injecting efficiencies to compare with each other.The effects of ditker parameters such as K coefficient and the noise intensity in the dither amplitude on the null-shift stability and the angle random walk of dithered laser gyro are disscussed in detail.Experiments show that the null-shift stability and the angle random walk can be reduced to a minimum and the laser gyro works in good condition when K choose the value between 600 and 650,and the noise intensity in the dither amplitude choose the value between two and three percent.