We present a signal_processing system developed for enhancing the sensitivity of absorption measurement based on tunablediodelaser wavelength modulation spectroscopy.
基于可调谐半导体激光吸收光谱，提出了一种新的信号处理方法用于提高吸收光谱测量的灵敏度。
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Tunablediodelaser absorption spectroscopy has been applied in the fields of atmospheric chemistry and monitoring pollutant gases as a new method of measuring trace gases.
In this paper, principles of measuring gas in coal mine according to tunablediodelaser absorption spectroscopy are introduced and outline of this measuring system is given.