通过标定速率偏频激光陀螺(RBRLG)的安装误差角,实现了标度因数的高精度测量。根据速率偏频激光陀螺的结构特点,通过分析常规的标度因数测量方法,发现安装误差角直接决定了标度因数的测量精度,进而提出了一种安装误差角的标定方法。该方法将速率偏频激光陀螺倾斜约45°安装于位置转台上,分别测量其处于4种状态时激光陀螺的脉冲输出,通过运算即可得到激光陀螺的安装误差角,进而对标度因数的测量公式进行修正。实验结果表明,标定安装误差角后速率偏频激光陀螺标度因数的测量精度可优于10-7。

Scale factor of rate biased laser gyro is precisely measured by calibrating fix-error angle. Common scale factor measurement methods are analyzed according to the characteristics of rate biased laser gyro structure,and it is found that the precision of measuring scale factor is determined by fix-error angle. A method of calibrating fix-error angle is put forward. With this method rate biased laser gyro is installed on position turntable by approximate 45°,the ouput pulses of four different states are measured,then the laser gyro fix-error angle can be calculated,and the formula of measuring scale factor is corrected by the fix-error angle. The experimental result shows that precision of measuring rate biased laser gyro scale factor can be higher than 10-7.