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动态多频数字锁相算法及其应用

谢琼 李建平 高晓光 贾建

谢琼, 李建平, 高晓光, 贾建. 动态多频数字锁相算法及其应用[J]. 电子与信息学报, 2009, 31(8): 2006-2010. doi: 10.3724/SP.J.1146.2008.01015
引用本文: 谢琼, 李建平, 高晓光, 贾建. 动态多频数字锁相算法及其应用[J]. 电子与信息学报, 2009, 31(8): 2006-2010. doi: 10.3724/SP.J.1146.2008.01015
Xie Qiong, Li Jian-ping, Gao Xiao-guang, Jia Jian. Dynamic Multi-frequency Digital Lock-in Algorithm and Its Application[J]. Journal of Electronics & Information Technology, 2009, 31(8): 2006-2010. doi: 10.3724/SP.J.1146.2008.01015
Citation: Xie Qiong, Li Jian-ping, Gao Xiao-guang, Jia Jian. Dynamic Multi-frequency Digital Lock-in Algorithm and Its Application[J]. Journal of Electronics & Information Technology, 2009, 31(8): 2006-2010. doi: 10.3724/SP.J.1146.2008.01015

动态多频数字锁相算法及其应用

doi: 10.3724/SP.J.1146.2008.01015

Dynamic Multi-frequency Digital Lock-in Algorithm and Its Application

  • 摘要: 该文提出一种动态多频锁相算法。与传统锁相方法相比,该算法不需要选择参考信号的类型,在继承了传统锁相方法高信噪比优点的基础上,能够锁出由一个基频和多个倍频分量合成的复合信号的幅值,从而获得更多的有用信息。同时,采用动态调整参考信号频率的方法,有效地解决了实际信号频率漂移引起的幅值求取误差问题。应用于NDIR红外气体浓度检测的结果表明,该算法可以增大检测量程,并提高系统检测灵敏度。
  • Alonso R, Villuendas F, and Borja J, et al.. Low-cost, digitallock-in module with external reference for coating glasstransmission/reflection spectrophotometer[J].Meas. Sci.Technol.2003, 14(5):551-557[2]Martin C F, Henry C L, and Ivan R P, et al.. Self-phasemodulation signatures of neuronal activity[J].Optics Letters.2008, 33(3):219-221[3] PerkinElmer Instruments, Specifying Lock-in Amplifiers,Technical Note TN1001, www.signalrecovery.com., 2000.[4]汤子跃, 张守融. 频率源稳定性对BiSAR成像的影响研究[J].电子与信息学报.2004, 26(1):100-106浏览[5]Masciotti J M, Lasker J M, and Hielscher A H. Digital lock-indetection for discriminating multiple modulation frequencieswith high accuracy and computational efficiency[J].IEEETransactions on Instrumentation and Measurement.2008,57(1):182-189[6]Maximiliano O S and Fabian J B. Lock-in amplifier errorprediction and correction in frequency sweepmeasurements[J]. Review of Scientific Instruments, 2007,78(1): 1-7.[7]Rilling G and Flandrin P. One or two Frequencies? Theempirical mode decomposition answers[J].IEEETransactions on Signal Processing.2008, 56(1):85-95[8]Silver J A and Chen S J. Carbon monoxide sensor forcombustion feedback control. 44th AIAA Aerospace SciencesMeeting and Exhibit[C]. Reno, Nevada. 9-12 January 2006:1-9.[9]Ohlckers P, Ferber A M, and Dmitriev V K, et al.. Aphotoacoustic gas sensing silicon microsystem [C].Transducers 2001. Munich Germany, June 10-14 2001:780-783.[10]Remennyia M A, Zotovaa N V, and Karandasheva S A, et al..Low voltage episide down bonded mid-IR diode optopairs forgas sensing in the 33-4.3 m spectral range [J].. Sensors andActuators B.2003, 91(2):256-261
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出版历程
  • 收稿日期:  2008-08-25
  • 修回日期:  2009-01-05
  • 刊出日期:  2009-08-19

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