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The article presents the Raman lidar equation results for nitrogen and sulfur oxides molecules concentration measurement at the equal or concentration in the atmosphere at a ranging distance of up to 500 m. The analysis of makes it possible to choose the Raman lidar optimal parameters. The findings of the study are: when meas-uring the nitrogen and sulfur oxides concentration by the proposed Raman lidar using laser radiation at a wave-length of 532 nm, it is possible to register the concentration of sulfur dioxide in 616 s with a ranging distance up to 500 m, for nitrogen dioxide in the entire range of distances in up to 50 s, and for nitric oxide up to 5000 s. The results are implemented in a certain laser system that controls pollutant emission by means of marine power equipment. The system is installed on the shore. It is designed for continuous remote measurement of the con-centration of solid particles and molecules of nitrogen oxides, sulfur, hydrocarbons (in total) in the air environ-ment above the water area of a seaport and a port territory. If the laser monitoring system is installed on board the vessel, it can be used for continuous monitoring of pollutant emission produced by marine diesel engines. The laser monitoring system can also be used as a tool for checking the technical condition of a marine diesel engine.
Raman lidar, molecule, concentration, ranging distance, laser radiation wavelength, laser emission control system
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