A Method of Atmospheric Boundary Layer Detection Based on Hybrid LiDAR

A technology of atmospheric boundary layer and laser radar, which is applied in the field of atmospheric detection, can solve the problems of rare quantitative classification and practical application of unfavorable weather forecast, and achieve the effects of improving accuracy, facilitating operation and maintenance, and reducing costs

Active Publication Date: 2021-12-21
山东国耀量子雷达科技有限公司
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Problems solved by technology

[0003] However, the inventors of the present invention have found that the traditional classification of the atmospheric boundary layer is mainly qualitative, and there are few classifications based on quantification, which is not conducive to practical applications such as weather forecasting.

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  • A Method of Atmospheric Boundary Layer Detection Based on Hybrid LiDAR

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Embodiment

[0034] The invention discloses an atmospheric boundary layer detection method based on a hybrid laser radar.

[0035] Such as figure 1 As shown, the hybrid laser radar includes: continuous laser 1, beam splitter 2, acousto-optic modulator 3, fiber amplifier 4, circulator 5, binocular telescope 6, optical switch 7, coupler 8, balanced detection Device 9, analog acquisition card 10, computer 11, filter 12, detector 13, digital acquisition card 14; Binoculars 6 include transmitting telescopes and receiving telescopes;

[0036] The output end of the CW laser 1 is connected to the input end of the beam splitter 2, the first output end of the beam splitter 2 is connected to the input end of the acousto-optic modulator 3, the second output end of the beam splitter 2 is connected to the input end of the coupler 8 The first input end is connected, the output end of the acousto-optic modulator 3 is connected with the input end of the optical fiber amplifier 4, the output end of the opt...

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Abstract

The invention discloses an atmospheric boundary layer detection method based on a hybrid laser radar. The basic principle is: using a hybrid lidar, integrating the direct detection aerosol lidar system and the coherent wind measurement lidar system, simultaneously detecting the vertical profile of aerosol optical properties and turbulence intensity, and inverting the height of the atmospheric boundary layer respectively , using the comparison of the difference between the two and the selected threshold to determine different types of atmospheric boundary layers. This method can quantitatively classify the atmospheric boundary layer with only one device, and carry out quantitative and parametric description of various types of boundary layers, which is helpful for improving the accuracy of atmospheric models such as climate models, weather forecast models, and atmospheric pollution diffusion models. Further improve.

Description

technical field [0001] The invention relates to the field of atmospheric detection, in particular to an atmospheric boundary layer detection method based on a hybrid laser radar. Background technique [0002] The atmospheric boundary layer, also often referred to as the planetary boundary layer, is the region of the Earth's atmosphere that is directly affected by and responds to surface activity. Activities such as frictional drag, transpiration, evaporation, and heat transfer all contribute to changes in the boundary layer over time. Affected by changes in surface atmospheric turbulent activity at sunrise and sunset, the atmospheric boundary layer is mainly divided into three types: convective boundary layer, stable boundary layer and remnant layer. After the sun rises, the atmospheric boundary layer is affected by the surface radiation heating caused by sunlight, the convective activity and vertical mixing are strong, and the height of the boundary layer rises, so it is c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/88
CPCG01S17/88
Inventor 贾铭蛟夏海云王冲岳斌袁金龙
Owner 山东国耀量子雷达科技有限公司
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