Dr. Youhua Chen Profile

Dr. Youhua Chen

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Publications (5)

Proceedings Article | 5 June 2014 Paper

Noise estimation technique to reduce the effects of 1/f noise in Open Path Tunable Diode Laser Absorption Spectrometry (OP-TDLAS)

Israa Mohammad, Gary Anderson, Youhua Chen

Proceedings Volume 9113, 91130S (2014) https://doi.org/10.1117/12.2063662

KEYWORDS: Semiconductor lasers, Modulation, Signal processing, Error analysis, Optical simulations, Absorption, Interference (communication), Sensors, Tunable diode lasers, Laser spectroscopy

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Proceedings Article | 19 September 2013 Paper

A two-laser beam technique for improving the sensitivity of low frequency open path tunable diode laser absorption spectrometer (OP-TDLAS) measurements

Israa Mohammad, Gary Anderson, Youhua Chen

Proceedings Volume 8867, 88670E (2013) https://doi.org/10.1117/12.2033564

KEYWORDS: Interference (communication), Signal to noise ratio, Error analysis, Semiconductor lasers, Modulation, Optical simulations, Absorption, Spectroscopy, Spectroscopes, Calibration

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Proceedings Article | 19 September 2013 Paper

Improvement in the sensitivity of methane detection using a double fast Fourier transform-based filter

Samira Mahdi, Ed Wilson, Youhua Chen, Gary Anderson

Proceedings Volume 8868, 88680A (2013) https://doi.org/10.1117/12.2041333

KEYWORDS: Methane, Absorption, Semiconductor lasers, Signal to noise ratio, Gases, Error analysis, Fourier transforms, Modulation, Signal detection, Mirrors

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Proceedings Article | 31 May 2013 Paper

A new double FFT-based filter to reduce the effect of 1/f noise spectrum in a tunable diode laser spectrometer (TDLS)

Samira Mahdi, Youhua Chen, Gary Anderson

Proceedings Volume 8720, 87201D (2013) https://doi.org/10.1117/12.2020786

KEYWORDS: Absorption, Error analysis, Spectroscopy, Mars, Semiconductor lasers, Signal to noise ratio, Tunable diode lasers, Calibration, Interference (communication), Laser spectroscopy

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Proceedings Article | 20 May 2013 Paper

Automatic laser beam alignment using blob detection for an environment monitoring spectroscopy

Jarjees Khidir, Youhua Chen, Gary Anderson

Proceedings Volume 8744, 87440U (2013) https://doi.org/10.1117/12.2018149

KEYWORDS: Blob detection, Spectroscopy, Target detection, Image processing, Environmental sensing, Cameras, Video, Environmental monitoring, Detection and tracking algorithms, Robotics

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