| 基于LabVIEW的PGC零差检测技术研究 |
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| 引用本文： | 叶有祥,周盛华. 基于LabVIEW的PGC零差检测技术研究[J]. 光学仪器, 2018, 40(1): 19-23 |
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| 作者姓名： | 叶有祥 周盛华 |
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| 作者单位： | 上海理工大学 光电信息与计算机工程学院, 上海 200093,中国计量大学 光学与电子科技学院, 浙江 杭州 310018 |
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| 基金项目： | 浙江省科技厅公益项目（2017C33005） |
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| 摘 要： | 相位生成载波(PGC)调制和解调技术是干涉型光纤传感器领域非常重要的信号处理技术。简要说明了相位生成载波的调制和解调原理,结合具体的公式推导过程对PGC-DCM解调算法和PGC-Arctan解调算法进行了详细的理论分析。利用LabVIEW软件编写了两种PGC解调过程的仿真程序,实现了对被测信号的解调。对比分析了两种解调结果,对PGC解调中的一些关键参数进行了讨论。该研究结果对于光纤干涉传感器的相位解调技术的改进具有参考价值。
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| 关 键 词： | 光纤干涉 相位生成载波(PGC) 相位解调 |
| 收稿时间： | 2017-06-08 |
Research on PGC homodyne detection technology based on LabVIEW |
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| YE Youxiang and ZHOU Shenghua. Research on PGC homodyne detection technology based on LabVIEW[J]. Optical Instruments, 2018, 40(1): 19-23 |
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| Authors: | YE Youxiang and ZHOU Shenghua |
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| Affiliation: | School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China |
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| Abstract: | Phase generated carrier(PGC) modulation and demodulation technology is a very important signal processing technology in the field of interferometric fiber-optic sensors.The principle of modulation and demodulation of PGC is briefly described.The PGC-DCM(differentical cross multiplying) demodulation algorithm and the PGC-Arctan demodulation algorithm are two classic PGC demodulation algorithms.The detailed theoretical analysis of the two demodulation algorithms is carried out in combination with the specific formula deduction process.The simulation program of the two PGC demodulation processes is given by LabVIEW software,and the demodulation of the measured signal is realized.Two kinds of demodulation results are compared and analyzed,and some key parameters in PGC demodulation are discussed.The conclusions provide reference value for the improvement of the phase demodulation technology of the fiber-optic interferometer. |
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| Keywords: | the fiber-optic interference phase generated carrier(PGC) phase demodulation |
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