| 引用本文: | 张庆华,胡绍民,龙兴武.机械抖动激光陀螺小时延信号处理方法的研究.[J].国防科技大学学报,2010,32(2):163-166.[点击复制] |
| ZHANG Qinghua,HU Shaomin,LONG Xingwu.Research on Small Delay Signal Processor Method of Mechanical Dithered Ring Laser Gyro[J].Journal of National University of Defense Technology,2010,32(2):163-166[点击复制] |
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| 机械抖动激光陀螺小时延信号处理方法的研究 |
| 张庆华, 胡绍民, 龙兴武 |
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(国防科技大学 光电学院，湖南 长沙 410073)
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| 摘要: |
| 去除抖动信号是机械抖动激光陀螺信号处理电路的重要工作，针对目前现有的机械抖动激光陀螺解调方法存在的缺陷，本文提出了抖动剥除和FIR滤波器相结合的一种解调方法，以满足机抖激光陀螺在快速跟踪中的应用要求。实验结果表明，抖动剥除后，陀螺计数脉冲中的抖动信号衰减了近75dB，可以直接用于精度要求不高实时输出角速率的场合。抖动剥除后用低阶的FIR低通滤波器滤除剩余的抖动偏频量和高频噪声，在保证小时延的基础上提高了精度。 |
| 关键词: 激光陀螺 快速跟踪 抖动剥除 FIR滤波器 |
| DOI： |
| 投稿日期：2009-11-02 |
| 基金项目: |
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| Research on Small Delay Signal Processor Method of Mechanical Dithered Ring Laser Gyro |
| ZHANG Qinghua, HU Shaomin, LONG Xingwu |
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(College of Optoelectrics，National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| Dither signal removal is the important work of mechanical dithered ring laser gyro (MDRLG) signal processor. In view of the limitation of present dither signal removal method in fast tracking use, a new method combining dither stripper with FIR filter is proposed in this paper. Results show that the dither signal in gyro count can be attenuated about 75dB after dither stripper, which can be used in the situation that real time angular rate output is needed. The residual dither signal and high frequency noise can be removed by FIR low pass filter，then the performance is improved under the condition of short time delay. |
| Keywords: Ring Laser Gyro(RLG) fast tracking dither stripper FIR filter |
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