基于简化Mohr模型的光纤陀螺温度补偿方法研究

为了提高光纤陀螺温度补偿精度,采用Mohr理论建立了光纤环圈的热传递模型,准确分析了光纤环圈内部的温度变化和分布情况,计算得到了光纤环圈的Shupe误差。根据Shupe理论误差和陀螺仪输出的相关性分析,得到了最优的光纤环圈热传递参数。根据热传递参数建立了光纤陀螺温度补偿模型,完成了光纤陀螺的实时温度补偿,实际补偿后光纤陀螺仪变温精度提高了约3.4倍。

Temperature Compensation Research for FOG Based on Mohr Model

To improve compensation precision of FOG, thermal transfer model of fiber loop based on Mohr theory was established. The temperature changing and thermal distribution of fiber loop was analyzed, and Shupe error of fiber loop was computed. The correlation of the output of FOG and Shupe error is simulated. The optimum thermal transfer parameters of fiber loop was attained. The Shupe error compensation models are established. The real-time compensation of FOG error is designed to verify the effect, the bias stability is 50 times higher than the original one.