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文章提出了一种针对再入式光纤陀螺(Re-FOG)的信号检测方法,采用正负交替变化的脉冲波调制,使不同循环圈数干涉信号得到不同的相位调制,从而分离出所需圈数的干涉信号并解算出转速。实验测试了陀螺样机,分离了第一圈和第二圈干涉信号并由此测量到转速。实验结果表明:所提出的信号检测方法能够有效地测出陀螺转速;所研制的光纤陀螺的零偏稳定性优于4°/h。
In this paper, a signal detection method for Re-FOG is proposed. By using the pulse waveform modulation with alternating positive and negative phases, different phase modulations are obtained for the interference signals in different cycles, so that the desired circle The number of interference signals and calculate the speed solution. The gyroscopic prototype was tested experimentally, and the interference signals of the first and second rings were separated and the rotational speed was measured. Experimental results show that the proposed signal detection method can effectively detect the rotational speed of the gyroscope, and the polarization stability of the developed gyroscope is better than 4 ° / h.