| 摘要: |
| 对光纤陀螺尖峰脉冲进行了深入研究，建立了光纤陀螺前放电路的噪声模型，分析了两个关键参数带宽和放大倍数对陀螺噪声和信噪比的影响，仿真结果指出降低前放带宽、提高放大倍数可以大幅度提高陀螺的信噪比，由于光纤陀螺信号特性的限制，这些改变必须在切除尖峰脉冲后才可以实现。对比分析了常见的几种光纤陀螺尖峰脉冲抑制方案，选择了模拟开关切除尖峰脉冲方案进行试验，试验结果表明，尖峰脉冲抑制方案对光纤陀螺的输出数据噪声性能提升效果显著，改进后的陀螺噪声降低了13%。 |
| 关键词: 光纤陀螺 前放电路 带宽 尖峰脉冲 模拟开关 |
| DOI： |
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| 基金项目: |
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| Research on Peak Pulse of Fiber Optic Gyros |
| HONG Wei,PAN Zi-jun,WANG Meng-qi,WEI Zhi-wu,JI Shi-tao |
| (No.16 Institute,The 9th Academy，China Aerospace Science and Technology Corporation) |
| Abstract: |
| The peak pulse of fiber optic gyroscopes（FOG）is deeply researched，noise model of preamplifier circuit is established，then the influence of two key parameters bandwidth and magnification times to the FOG noise and SNR is analyzed.Simulation results show that the reducing of bandwidth and increasing of magnification could significantly improve the SNR of FOG.Due to the limitations of FOG signal characteristics，these changes must be implemented after the removal of the peak pulses.Analog switch scheme is selected after comparison of several common methods.Experimental results show that this scheme could significantly improve the FOG noise performance，the noise is reduced by 13%. |
| Key words: FOG Preamplifier circuit Bandwidth Peak pulse Analog switch |
