首页|Simultaneous detection of multiple gaseous pollutants using multi-wavelength differential absorption LIDAR
Simultaneous detection of multiple gaseous pollutants using multi-wavelength differential absorption LIDAR
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NSTL
Elsevier
Differential absorption LIDAR (DIAL) is an effective way to remotely detect air pollutants and hazardous chemicals in the atmosphere. Based on the traditional dual-wavelength DIAL theory and previous studies, simultaneous measurement of multiple pollutant gases in the atmosphere using a multi-wavelength differential absorption LIDAR (MW-DIAL) is reported. It can measure a variety of harmful chemicals in the environment and improve the precision of the technology. A prototype was demonstrated using a tunable Transversely Excited Atmospheric (TEA) CO2 laser working in the 9-11 mu m band. The prototype could accurately detect NH3, CH3OH, and O-3 simultaneously in a detection and measurement, with correlation coefficients of 0.967, 0.981, and 0.949, respectively. Simulations and the evaluation experiment proved the feasibility of the MW DIAL detection method for multiple pollutant gases in the atmosphere. The field test showed that the MW-DIAL can be utilized to identify and detect the target gas at a 5-km-distance.
Multi-wavelength DIALRemote detection of gasesAtmospheric pollution
NSTL
Elsevier
