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The Concentration Measurement of Hydrogen Molecules in the Atmosphere: Lidar Equation Computer Simulation for the Differential Absorption and Scattering

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The article discusses the concerns of improving the accuracy of lidar measurements of the concentration of hydrogen molecules in the atmosphere. A computer simulation of the lidar equation was performed for differential light absorption and scattering by hydrogen molecules during vertical sensing of the atmosphere to a height of up to 1500 m taking into account the ratio of the halfwidths of the lasing lines and the function of the lidar apparatus. The article presents the optical scheme of a differential absorption and scattering lidar with a two-wavelength laser emitter; one wavelength of its radiation coincides with the maximum wavelength of the absorption band of the molecule under study, while the other wavelength is outside this band. Using computer simulation, it is demonstrated that the relative error in measuring the lidar signal of differential absorption and scattering when sensing hydrogen molecules in the atmosphere decreases sharply at a sensing distance of less than 50 m. At a sensing distance of more than 800 m, the relative error remains practically unchanged and does not exceed 0.02. The results obtained can be used to develop differential absorption and scattering lidars for sensing hydrogen molecules in the atmosphere.

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Acknowledgment

The work was supported by the Russian Foundation for Basic Research (Grants No. 19-42- 230004, 19-45-230009).

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Authors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

    V. E. Privalov

  2. V. G. Shukhov Belgorod State Technological University, Novorossiysk Branch, Novorossiysk, Russia

    V. G. Shemanin

  3. Novorossiysk Polytechnic Institute of Kuban State Technological University, Novorossiysk, Russia

    V. G. Shemanin

Authors
  1. V. E. Privalov
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  2. V. G. Shemanin
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Correspondence to V. E. Privalov.

Additional information

Translated from Izmeritel’naya Tekhnika, No. 11, pp. 38–43, November, 2022.

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Privalov, V.E., Shemanin, V.G. The Concentration Measurement of Hydrogen Molecules in the Atmosphere: Lidar Equation Computer Simulation for the Differential Absorption and Scattering. Meas Tech 65, 827–833 (2023). https://doi.org/10.1007/s11018-023-02157-1

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  • DOI: https://doi.org/10.1007/s11018-023-02157-1

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