| 基于数字式锁相环的双向差动相位解调法设计 |
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| 引用本文： | 陈军,邬利挺,徐万明.基于数字式锁相环的双向差动相位解调法设计[J].机电工程技术,2011,40(11):84-87. |
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| 作者姓名： | 陈军 邬利挺 徐万明 |
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| 作者单位： | 1. 洛阳师范学院物理与电子信息学院,河南洛阳,471022
2. 上海微电子装备有限公司,上海,201203 |
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| 摘 要： | 设计了应用于高精度干涉测量系统的双向差动相位解调法,利用锁相环的分频特性对测量信号进行降频处理,增加计数脉冲的数量,再结合双向差动相位解调法对信号进行鉴相,从而提高测量分辨力.在He-Ne双频激光外差偏振干涉信号处理实验装置中进行了实验,证明了该方法能够提高测量精度.
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| 关 键 词： | 干涉测量 数字锁相环 相位解调 |
Design of Bidirectional Difference Phase Demodulation Based on DPLL |
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| CHEN Jun,WU Li-ting,XU Wan-ming.Design of Bidirectional Difference Phase Demodulation Based on DPLL[J].Mechanical & Electrical Engineering Technology,2011,40(11):84-87. |
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| Authors: | CHEN Jun WU Li-ting XU Wan-ming |
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| Affiliation: | CHEN Jun1,WU Li-ting2,XU Wan-ming1(1.Luoyang Normal University,Luoyang471022,China,2.Shanghai Micro Electronics Equipment Co.,Ltd,Shanghai 201203,China) |
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| Abstract: | Aiming at high accuracy interferometry system,designed bidirectional difference phase demodulation method.The frequency of measurement signal was demultiplicated by the DPLL to increase the number of pulse count,and with the phase demodulation,the resolving power was increased.The experiment results of the He-Ne double frequency laser heterodyne polarization interferometry signal system show that the method was correct. |
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| Keywords: | interferometry DPLL phase demodulation |
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