研究了激光吸收光谱自适应滤波处理算法,提出了一种改进的激光吸收光谱测量系统方案,激光器发射的激光经分束器分成三路,分别构成测量通道、定标通道和参考通道,数据采集电路同步获取三个通道信号数据,定标通道数据用于波长锁定和浓度定标,参考通道信号数据包含了与测量通道相关的噪声,以此为基础构建了自适应噪声抵消器,降低了噪声对测量通道的影响,提高了气体浓度反演的精度.
参考文献
| [1] | Werle P.A review of recent advances in semiconductor lasor based gas monitors[J].Spectrochimica Acta,1998,54(2):197-236. |
| [2] | Reid J,Labrie D.Second-harmonic detection with tunable diode lasers-comparison of experiment and theory[J].Appl.Phys.B,1981,26(3):203-210. |
| [3] | Durry G,Pouchet I,Amarouche N,et al.Shot-noise-limited dual-beam detector for atmospheric trace-gas monitoring with near-infrared diode lasers[J].Appl.Opt.,2000,39(30):5609-5619. |
| [4] | Frish M B,Sonnenfroh D M.Trace gas analyzers based on tunable diode laser absorption spectroscopy (TDLAS)for energy production,transmission,and storage[C].OSA/Energy,2009. |
| [5] | Browu L R:Naumenko O V,Polovtseva E R,et al.Hydrogen sulfide absorption spectrum in the 5700～6600 cm-1spectral region[C].Proc.SPIE,2004,5311:59-67. |
| [6] | Wang M,Zhang Y J,Liu J G,et al.Applications of a tunable diode laser absorption spectrometer in monitoring grcenhouse gases[J].Chin.Opt.Lett,2006,4(6):363-365. |
| [7] | Shu X W,Zhang Y J,Zhang S,et al.The mcasurement of the H2S in the pre-desulfurization of natural gas in the Shengli oil field with the TDL[C].Proc.SPIE,2009,7382:738220-1-738220-9. |
| [8] | McCool J M,Widrow B.Principles and applications of adaptive filters:a tutorial review[R].IEEE ISCAS,1980:1143-1157. |
| [9] | Wang L M,Zhaug Y J,Li H B,et al.Study on long distance transmission technique of weak photocurrent signal in laser gas sensor[J].Chin.Opt.Lett,2012,10(4):042802-1-042802-4. |
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