光纤陀螺随机游走系数模型的修正和实验研究  

Correction for Model of Random Walk Coefficient of FOG and Experimental Comparison Study

作　　者：张桂才[1] 闾晓琴[1] 刘凯[1] 李祖国[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2009年第1期18-20,共3页Piezoelectrics & Acoustooptics

摘　　要：通过考虑探测器的带宽,对光纤陀螺随机游走系数(RWC)模型进行了修正,由修正后的随机游走系数模型计算出的理论RWC值与实际测量值一致。研究还表明,采用多点采样技术可以进一步降低随机游走系数,使陀螺精度更接近散粒噪声和光源相对强度噪声所限制的最小检测灵敏度极限,但最大采样点数的选择仍受探测器带宽限制。By taking into consideration of the detector bandwidth, the random walk coefficient model of the fiber optic gyro was corrected. The RWC value calculated by the corrected model of random walk coefficient showed good agreement with the measured value of the fiber optic gyro. In addition, we found that the random walk coefficient can be reduced by multi-point sampling technology, which can make the FOG performance close up to the minimum detectable sensitivity limited by the shot noise and intensity noise, but the maximum number of sample points is still limited by the detector bandwidth.

关 键 词：光纤陀螺 随机游走系数 噪声 探测器组件带宽 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]