摘要: |
陀螺输出波形中经常含有2 倍于本征频率的尖峰脉冲误差信号。采用高速开关电路消除
了光纤陀螺的尖峰脉冲, 提高陀螺采样有用信号的信噪比。从理论分析和仿真上证明了这一方
法不仅消除了尖峰脉冲, 而且也消除了尖峰脉冲扩散在解调信号中的奇次谐波干扰。通过实验
对比可以看出这一方法提高了陀螺的精度。 |
关键词: 尖峰脉冲 开关电路 奇次谐波 不对称性 |
DOI: |
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基金项目: |
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Fiber Optic Gyro with Switch Circuit for Eliminating Spike Pulse and Theoretical Analysis |
ZHANG Shu⁃ying,ZUO Wen⁃long,HUI Fei,CHEN Xin,GAO Hong⁃yu |
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Abstract: |
Gyro’s output often contains the error signal whose frequency is twice as much as of the intrinsic frequency. In
this paper, a high⁃speed switch circuit is used to eliminate the spike pulse of fiber optic gyroscope and improve the signal⁃
to⁃noise ratio of the sampled signal. This method proved to eliminate not only spike pulse but also odd harmonic interference
which diffuse into the demodulation signal by theoretical analysis and simulation. The experimental results confirm that this
method indeed improves the accuracy of the gyro. |
Key words: Spike pulse Switch circuit Odd harmonic Asymmetry |