Hydrogen Sulfide Molecules Lidar Sensing in the Atmosphere

The optimum operation modes of the Raman lidar and the differential absorption and scattering lidar for the hydrogen sulfide molecules sensing in the atmosphere at the low permissible concentration level have been studied and the error estimation of the hydrogen sulfide molecules concentration measurement in the atmosphere by the Raman lidar and the differential absorption and scattering lidar has been executed. The computer simulation of the two types of such a lidar equations has been fulfilled for this purpose. The measurement relative accuracy for the range of the studied molecules concentration of 1011–1014 cm–3 at the 3.83 μ laser radiation wavelength and the ranging distances from 10 do1000 m lies in the range of 20–26% for the differential absorption and scattering lidar.