机抖激光陀螺多温度点实时温度补偿方法的研究

Research on Methods for Compensating Temperature of Mechanically Dithered RLG

研究了机抖激光陀螺的零偏和多温度点的关系。通过重复性温度实验,利用逐步回归法得到了温度补偿模型,并对模型的实用性进行了实验验证。结果表明,机抖陀螺的零偏和温度、温度梯度及温度速率有关;得到的温度补偿模型可以对陀螺的零偏进行实时补偿,以提高陀螺的精度,用此方法补偿后的单轴旋转激光陀螺导航系统定位精度优于1nmile/d,航向精度优于0.5′.

The relation of mechanically dithered RLG＇s bias to multi-temperature was studied. The temperature compensating model was gained by the stepwise regression method through the temperature ex- periment repeated, which applicability was validated. The investigated result shows that RLG＇s bias is related well to temperature, temperature＇s grads and rate; the temperature compensating model can compensate RLG＇s bias real-time and improve RLG＇s precision, in which the position location accuracy is better than 1 n mile/d and the heading accuracy is better than 0.5＇ for the ship＇s RLG inertial narigation system compensated with the model.