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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 of fiber optic gyroscope is an important direction for the development of fiber optic gyroscope. A three-axis optical fiber gyroscope optical path structure based on time-division multiplexing is proposed. By reducing the number of devices by multiplexing a light source and a detector, the cost is effectively reduced , Reducing the volume. Aiming at the single-channel multi-signal sensing theory of three-axis fiber gyroscope, an effective signal extraction scheme is given. Finally, the optical crosstalk noise is studied. A noise suppression technique is proposed and verified by experiments. The test results show that the noise suppression technology works well and the gyro accuracy meets the engineering application requirements.