In our work, we will present field tests under various conditions using Differential absorption LIDAR (DIAL) with two CO2 tunable lasers. The setup using two intendent synchronized lasers allows to achieve detection sensitivity that outperforms other setups. This will be shown using measurement data from the field tests under realistic conditions. We will investigate not only various DIAL setups, but also various signal processing algorithms applicable for the two-laser setup. The theoretical analysis will be additionally confirmed by the data obtained during field tests. The results enable to shorten the overall detection time, while maintaining overall detection sensitivity.
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