Tunable Diode Laser Absorption Spectroscopy (TDLAS) Detection Signal Denoising Based on Gabor Transform
文献类型：期刊论文
| 作者 | Cui Hai-bin1; Yang Ke1,2 ; Zhang Long1; Wu Xiao-song1; Liu Yong1; Wang An1; Li Hui3; Ji Min1
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 36期号:9页码:2997-3002 |
| 关键词 | Tdlas Gabor Transform Second Harmonic Denoising |
| DOI | 10.3964/j.issn.1000-0593(2016)09-2997-06 |
| 文献子类 | Article |
| 英文摘要 | Tunable diode laser absorption spectroscopy (TDLAS) technology combined with wavelength modulation spectroscopy (WMS) technology is an important technique for trace gas detection. Detected with the lock-in amplifier, the second harmonic signal obtained after demodulation is analyzed to get the gas absorption information. However, the second harmonic signal is affected by noise which reduces the accuracy and stability of the detection system. To improve the signal to noise ratio (SNR) of the TDLAS detection system, a denoising method based on Gabor transform is proposed for second harmonic signal noise reduction. Taking the CH4 absorption spectrum at 1 653. 72 nm as an example, the effectiveness of the noise reduction method is verified through simulation and experiments. The simulation results show that the signal to noise ratio for the second harmonic signal of 0 dB can be improved 15. 73 dB with Gabor transform-based denoising method. Experimental results show that with the Gabor transform-based denoising method, the linear correlation coefficient r can be as high as 0. 996 59 between the second harmonic peak value and the CH4 concentration in the range of 0. 001%similar to 0. 02%. At the same time, the detection accuracy and stability of the system have been improved significantly. |
| WOS关键词 | WAVELET TRANSFORM ; NOISE-REDUCTION ; ENHANCEMENT |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000383306800049 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/24729]  |
| 专题 | 合肥物质科学研究院_应用技术研究所 |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Beijing Tobacco Qual Supervis & Test Stn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui Hai-bin,Yang Ke,Zhang Long,et al. Tunable Diode Laser Absorption Spectroscopy (TDLAS) Detection Signal Denoising Based on Gabor Transform[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2016,36(9):2997-3002. |
| APA | Cui Hai-bin.,Yang Ke.,Zhang Long.,Wu Xiao-song.,Liu Yong.,...&Ji Min.(2016).Tunable Diode Laser Absorption Spectroscopy (TDLAS) Detection Signal Denoising Based on Gabor Transform.SPECTROSCOPY AND SPECTRAL ANALYSIS,36(9),2997-3002. |
| MLA | Cui Hai-bin,et al."Tunable Diode Laser Absorption Spectroscopy (TDLAS) Detection Signal Denoising Based on Gabor Transform".SPECTROSCOPY AND SPECTRAL ANALYSIS 36.9(2016):2997-3002. |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。