基于时分复用技术的三轴光纤陀螺光路噪声及抑制技术研究

Optical Noise and Suppression Based on Time-Division Multiplexing Three-Axis Fiber Optic Gyroscope

光纤陀螺小型化是光纤陀螺发展的一个重要方向,提出了一种基于时分复用技术的三轴光纤陀螺光路结构,通过复用一个光源和一个探测器大大减少了器件数量,有效地降低了成本,减小了体积。针对三轴光纤陀螺单信道多信号传感理论进行分析,给出了一种有效的信号提取方案,最后对光路串扰噪声进行了研究,提出一种噪声抑制技术并进行了实验验证。测试结果表明,噪声抑制技术效果良好,陀螺精度满足工程应用要求。

The miniaturization is very important for fiber optic presented based on time-division multiplexing technology. By gyroscope development. A fiber optic gyro optical structure is using complex with a light source and a detector, the number of the device, the cost, and the size were reduced greatly. The single-channel and multi-signal sensing theory of thre^axis fiber optic gyroscope is studied, and an effective signal extraction method is given. The optical crosstalk noise is analyzed and noise suppression technique is also given. Finally, the thre-axis fiber optic gyroscope is test. The test results show that noise suppression technology works well and the gyroscope satisfies the engineering applications.