Method for inverting boundary layer height based on coherent anemometric laser radar carrier-to-noise ratio

A technology of laser radar and coherent wind measurement, applied in the field of atmospheric detection, to achieve the effects of cost reduction, easy operation and maintenance, and high precision

Inactive Publication Date: 2019-07-19
山东国耀量子雷达科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for retrieving boundary layer height based on the carrier-to-noise ratio of coherent wind-measuring lidar, aiming to solve the problem of providing high-time-resolution boundary layer height inversion results when only coherent wind-measuring lidar is detected

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  • Method for inverting boundary layer height based on coherent anemometric laser radar carrier-to-noise ratio
  • Method for inverting boundary layer height based on coherent anemometric laser radar carrier-to-noise ratio
  • Method for inverting boundary layer height based on coherent anemometric laser radar carrier-to-noise ratio

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Embodiment

[0036] The invention discloses a method for retrieving the boundary layer height based on the carrier-to-noise ratio of coherent wind-measuring lidar.

[0037] Such as figure 1 As shown, the coherent wind lidar includes: continuous laser 1, beam splitter 2, acousto-optic modulator 3, fiber amplifier 4, circulator 5, telescope 6, coupler 7, balance detector 8, analog acquisition card 9. Computer 10;

[0038] The output end of the continuous 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 7 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 optical fiber amplifier 4 is connected with the input end of the circulator 5, and the transceiver end of the circ...

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Abstract

The invention discloses a method for inverting boundary layer height based on coherent anemometric laser radar carrier-to-noise ratio. The basal principle is as follows: a coherent anemometric laser radar is used for acquiring a carrier-to-noise ratio vertical profile; after performing signal normalization, the signal is processed by utilizing wavelet covariance conversion; and the height corresponding to a maximum value after the wavelet conversion is used as the height of the top of the atmospheric boundary layer. Compared with the existing algorithm, the statics atmospheric boundary layer height with high time resolution can be acquired by using the coherent anemometric laser radar; the dynamics atmospheric boundary layer height acquired through wind field inversion is in favor of further improving the precision of a climate model, a weather forecast model, and the atmosphere pollution diffusion model.

Description

technical field [0001] The invention relates to the field of atmospheric detection, in particular to a method for retrieving the boundary layer height based on the carrier-to-noise ratio of coherent wind-measuring laser radar. Background technique [0002] In recent decades, with the rapid development of social economy, air pollution has become more and more serious. Especially the hazy weather caused by suspended particulate matter such as aerosol fine particulate matter (PM2.5) poses a huge threat to human health and safety and the environment. The temporal and spatial distribution of PM2.5 is mainly affected by the atmospheric boundary layer. The atmospheric boundary layer, also known as the planetary boundary layer, is a critical region in the fields of atmospheric pollution control, numerical weather prediction, urban and agricultural meteorology, aeronautical meteorology, and hydrology. The height of the atmospheric boundary layer, also known as the thickness of the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95
CPCG01S17/95Y02A90/10
Inventor 王冲贾铭蛟夏海云岳斌袁金龙
Owner 山东国耀量子雷达科技有限公司
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