| 基于DSP的全数字闭环光纤陀螺 |
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| 引用本文： | 张春熹.基于DSP的全数字闭环光纤陀螺[J].北京航空航天大学学报,1998,24(6):695-698. |
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| 作者姓名： | 张春熹 |
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| 作者单位： | 北京航空航天大学 宇航学院 |
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| 摘 要： | 介绍了一种采用DSP(Digital Signal Processor)技术实现的全数字闭环光纤陀螺.该闭环光纤陀螺采用以多功能集成光学器件为核心的全保偏结构,以方波为偏置调制,数字阶梯波反馈.文中对该闭环光纤陀螺的前置放大、信号检测、数字解调、数字滤波等部分进行了设计和实现,对采用DSP技术解决系统精度和实时性矛盾的方案进行了讨论,并对闭环光纤陀螺的性能和参数进行了理论分析和实验测试.测试结果表明系统达到了小于0.3/h的零漂和100×10－6的非线性度指标.
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| 关 键 词： | 纤维光学陀螺仪 信号检测 闭合回路系统 数字信号处理 |
| 收稿时间： | 1998-05-18 |
All Digital DSP Based Closed-Loop Fiber Optic Gyroscope |
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| Zhang Chunxi,Song Ningfang,Du Xinzheng,Zhang Weixu.All Digital DSP Based Closed-Loop Fiber Optic Gyroscope[J].Journal of Beijing University of Aeronautics and Astronautics,1998,24(6):695-698. |
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| Authors: | Zhang Chunxi Song Ningfang Du Xinzheng Zhang Weixu |
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| Institution: | Beijing University of Aeronautics and Astronautics,School of Astronautics |
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| Abstract: | An all digital closed-loop fiber optic gyroscope (FOG) using digital signal processor (DSP) technique is presented.A multifunction integrated optic circuit (MIOC) is used, with square wave for biasing modulation and digital phase ramp for feed back. The design of signal detector,digital demodulator,preamplifier and digital filter is discussed, and theoretical analysis and experimental test on the performance and parameters of the closed-loop fiber optic gyroscope are performed.A trade-off between the system precision and response time using DSP is also discussed. Test results show that the bias of FOG is less than 0.3°/h, and the scale factor nonlinearity of FOG is less than 100×106. |
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| Keywords: | fiber optic gyroscopes signal detection closed loop systems digital signal processing |
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