We test the technique developed for lidar sounding of trace atmospheric gases, which combines the advantages of differential absorption and differential optical absorption spectroscopy methods. We performed numerical experiments in order to estimate the capability of remote atmospheric sounding using a laser system with optical parametric generation in the spectral regions 1.8–2.5 and 3–4 μm. On the basis of this technique, we have found and selected certain wavelengths informative for the gas analysis and simulated lidar signals, the analysis of which showed a possibility of remote monitoring of HCN and C2H6 at 1-km horizontal paths, CH4, at 5-km horizontal paths in the mid-IR, and CO2 and H2O at 5-km horizontal paths in the near-IR.
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