尖峰脉冲抑制电路在低精度光纤陀螺中的应用
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- 英文论文题名：Application of spike-pulse suppression circuit in low-precision FOG
- 论文作者：林毅 ; 张书颖
- 英文论文作者：LIN Yi ; ZHANG Shu-ying ; Tianjin Navigation Instrument Research Institute
- 年：2016
- 作者机构：天津航海仪器研究所;
- 论文关键词：方波调制 ; 尖峰脉冲 ; 谐波干扰 ; 开关电路
- 英文论文关键词：square wave modulation ; spike pulse ; harmonic interference ; switching circuit
- 会议召开时间：2016-09-27
- 会议录名称：2016年光学陀螺及系统技术发展与应用研讨会论文集
- 语种：中文
- 分类号：TN96
- 学会代码：ZGGZ
- 会议名称：2016年光学陀螺及系统技术发展与应用研讨会
- 会议地点：中国江西九江
- 主办单位：中国惯性技术学会
- 学会名称：中国惯性技术学会
- 页数：5
- 文件大小：784k
- 原文格式：D
- 会议级别：全国
摘要
闭环光纤陀螺普遍采用方波作为载波进行调制,则在解调时,探测器的输出端每隔?的时间会出现一次尖峰脉冲。这样的尖峰脉冲带来的谐波干扰会耦合进陀螺的解调信号中而被当做有用信号采集出来造成解调误差,在低精度陀螺中这种现象尤其明显。本文中介绍了一种采用高速开关电路的方法进行去尖峰处理,并通过MATLAB仿真证明了设置合理的开关电路确实能够起到抑制尖峰脉冲谐波干扰的作用,从而降低了陀螺的漂移,提升了低精度陀螺的综合性能。实验证明,采用高速开关电路的低精度光纤陀螺漂移有明显降低。
Closed-loop FOG used to employ a square wave as carrier to modulate, at the demodulation time, the output of the detector come through every ? time will appear a spike. Such spikes cause the harmonic interference that will coupled into the gyro signal in demodulation, also the harmonic interference will be used as a useful signal to cause demodulation errors. In the low precision FOG, the infection will be more obvious. In this paper, authors introduces a high-speed switching circuits to peak the spike pulse, and using the MATLAB simulation to prove that setting reasonable switching circuit can indeed play the role of suppressing the harmonic interference of spike pulse, thereby depressing the excursion of FOG, improving the performance of the FOG. In the examination, the excursion of the low precision FOG has been depressing visible.
Closed-loop FOG used to employ a square wave as carrier to modulate, at the demodulation time, the output of the detector come through every ? time will appear a spike. Such spikes cause the harmonic interference that will coupled into the gyro signal in demodulation, also the harmonic interference will be used as a useful signal to cause demodulation errors. In the low precision FOG, the infection will be more obvious. In this paper, authors introduces a high-speed switching circuits to peak the spike pulse, and using the MATLAB simulation to prove that setting reasonable switching circuit can indeed play the role of suppressing the harmonic interference of spike pulse, thereby depressing the excursion of FOG, improving the performance of the FOG. In the examination, the excursion of the low precision FOG has been depressing visible.
引文
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[2]Lefevre H C.光纤陀螺仪[M].国防工业出版社,2002.
[3]Pavlath G.Closed-loop fiber optic gyros[C]//Fiber Optic Gyros:20th Anniversary Conference,1996.
[4]吕品.光纤陀螺的随机误差性能评价方法研究[J].仪器仪表学报,2014,35(2):412-418
[5]孙国鑫.光纤干涉仪的信号检测与解调[D].硕士学位论文,2008.
[6]Lefevre H C,et al.Latest Advaneesin Fiber Optic Gyroscope Technology at Photonetics[C]//Proc.SPIE 2292,156(1994).
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