Abstract: Extreme environmental temperature is an important factor affecting the normal operation of the aerosol-water vapor lidar system. Especially for application scenarios directly exposed to the environment, external solar radiation input, internal heat generation, and internal layout structure all pose higher requirements for the design of temperature control in the development of aerosol-water vapor lidar system. In this paper, a design scheme is proposed for the temperature control requirements of the aerosol water vapor lidar system for outdoor operation. Firstly, a combination of numerical simulation and simulation experiments is applied to solve the internal temperature field and flow field of the aerosolwater vapor lidar operated in a high temperature environment. Subsequently, based on the simulation results, the temperature control design is further optimized, and the aerosol-water vapor lidar is developed according to the optimized temperature control scheme. Finally, an adaptability test for high temperature environment is carried out for the aerosol-water vapor lidar. The test results show that the temperature difference between the test monitoring point and the simulation result is 0.4 ℃ , and the temperature control scheme adopted meets the design requirements, which has reference significance for the development of similar aerosol-water vapor lidar.

Key words: laser techniques, temperature control design, numerical simulation, aerosol-water vapor lidar