| 基于锁相混频原理的高精度激光外差
干涉信号的处理方法研究 |
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| 引用本文： | 张贵珍,陈本永,周砚江.基于锁相混频原理的高精度激光外差
干涉信号的处理方法研究[J].传感技术学报,2005,18(3):547-550. |
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| 作者姓名： | 张贵珍 陈本永 周砚江 |
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| 作者单位： | 浙江理工大学测控科学与技术系,杭州310018 |
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| 摘 要： | 利用锁相环实现拍频转换,将高频干涉拍频信号降频至1.0 kHz,通过填脉冲式测相方法获得被测相位差.实验结果表明利用该方法在拍频转换后易于获得0.078°的高精度相位差,而且该方法具有实现电路简单、频率稳定性高和相位跟踪稳定的优点.
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| 关 键 词： | 外差干涉 信号处理 锁相环 混频 |
| 文章编号： | 1005-9490（2005）03-0547-04 |
| 收稿时间： | 2004-12-01 |
| 修稿时间： | 2004年12月1日 |
Novel Processing Method of High2Precision Heterodyne
Interference Signals Based on PLL Frequency2Mixing |
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| Z HA N G Guiz hen,C H EN B eny ong,Z HOU Yanj i ang.Novel Processing Method of High2Precision Heterodyne
Interference Signals Based on PLL Frequency2Mixing[J].Journal of Transduction Technology,2005,18(3):547-550. |
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| Authors: | Z HA N G Guiz hen C H EN B eny ong Z HOU Yanj i ang |
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| Affiliation: | Department of Measurement and Cont rol Technology , Zhej iang Universit y of Sciences , Hangz hou 310018 , China |
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| Abstract: | A novel high2p recision heterodyne interference signal s processing met hod based on f requency mix2
ing wit h p hase locked loop (PLL) is proposed. This met hod employs t he PLL to realize t he conver sion of
beat f requency signal , t he high2f requency beat f requency interference signal is t ransferred to a low - f re2
quency (1. 0 kHz) signal , and t he measured p hase shif t is achieved by filling p ul se. The experimental re2
sult s show t hat a high accuracy wit h a p hase shif t of 0. 078°is obtained and this met hod has t he advantages
of simple elect ronic circuit , high f requency stability and stable p hase t racking. |
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| Keywords: | heterodyne interferometer signal processing phase locked loop frequency mixing |
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