Detection method, device and equipment of airport wind field characteristics based on lidar

A technology of laser radar and detection method, which is applied in the direction of measuring device, fluid velocity measurement, electromagnetic wave re-radiation, etc., can solve the problems of poor comprehensive detection performance of wind field, etc. Detecting strong effects

Active Publication Date: 2021-10-22
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

However, in the process of realizing the present invention, the inventors found that the aforementioned traditional laser radar scanning strategy still has the technical problem of poor wind field comprehensive detection performance.

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  • Detection method, device and equipment of airport wind field characteristics based on lidar
  • Detection method, device and equipment of airport wind field characteristics based on lidar
  • Detection method, device and equipment of airport wind field characteristics based on lidar

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[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated with it, or there may be an intermediate element at the same time, that is, it may also be indirectly connected to another element .

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the pur...

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Abstract

This application relates to a lidar-based airport wind field feature detection method, device, and equipment. The method includes the steps of: configuring a scanning strategy for a lidar deployed at a predetermined location in the airport according to a set configuration strategy; The Doppler radial velocity information is inverted to obtain the three-dimensional wind field in the scanning volume; the wind field data below 600 meters is extracted from the three-dimensional wind field, and the corresponding F factor value is calculated according to the wind field data below 600 meters; The radial wind speed data of 35.3° altitude angle in the Doppler radial velocity information is calculated by the partial Fourier decomposition algorithm to obtain the kinetic energy intensity of the turbulent flow at different heights; the multiplicity of each altitude angle in the Doppler radial velocity information is extracted The Doppler spectrum data is used to calculate the turbulent dissipation rate at each radial distance of the wind field through the Doppler spectrum method. The above scheme achieves the effect of strong wind field comprehensive detection performance.

Description

technical field [0001] The present application relates to the technical field of aviation meteorological support, in particular to a lidar-based detection method, device and equipment for airport wind field characteristics. Background technique [0002] Low-altitude wind shear and turbulence are internationally recognized wind field phenomena that seriously affect flight safety. Low-altitude wind shear usually refers to the change of wind vector (wind direction, wind speed) in the horizontal and (or) vertical distance below the height of 600 meters near the ground; Regularity and spatial inhomogeneity are superimposed by the continuous distribution of vortices of various scales. Due to the strong and unpredictable characteristics of wind shear and turbulence, it seriously endangers the safety of aircraft during take-off and landing. At present, the technologies used for wind shear and turbulence detection mainly include anemometer, weather radar, wind profile radar and lid...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/95G01P5/26
CPCG01P5/26G01S17/95Y02A90/10
Inventor 李健兵周洁高航王雪松
Owner NAT UNIV OF DEFENSE TECH
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