Airport wind field feature detection method and device based on laser radar and equipment

A technology of lidar and detection method, which is applied in measurement devices, fluid velocity measurement, and re-radiation of electromagnetic waves, etc., can solve the problems of poor comprehensive detection performance of wind field, etc., to achieve accurate perception, strong comprehensive detection performance of wind field, and balance Effects of Spatial Coverage

Active Publication Date: 2021-06-15
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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  • Airport wind field feature detection method and device based on laser radar and equipment
  • Airport wind field feature detection method and device based on laser radar and equipment
  • Airport wind field feature detection method and device based on laser radar and equipment

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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

The invention relates to an airport wind field feature detection method and device based on a laser radar and equipment. The method comprises the following steps of: carrying out scanning strategy configuration on a laser radar deployed at a preset position of an airport according to a set configuration strategy; according to Doppler radial velocity information obtained by volume scanning of the laser radar, obtaining a three-dimensional wind field in the scanning volume through inversion; extracting wind field data below 600m from the three-dimensional wind field, and calculating to obtain a corresponding F factor value according to the wind field data below 600m; extracting radial wind speed data at an elevation angle of 35.3 degrees in the Doppler radial velocity information, and calculating to obtain kinetic energy intensity of turbulence at different heights through a partial Fourier decomposition algorithm; and extracting doppler spectrum data of each elevation angle in the Doppler radial velocity information, and calculating the turbulence dissipation rate of each radial distance of a wind field through a Doppler spectrum method. According to the method provided by the above technical schemes of the invention, the effect of relatively high comprehensive detection performance of the wind field is achieved.

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 Applications(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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