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Detection method and system for low-altitude wind shear at airport

A low-altitude wind shear and detection method technology, applied in radio wave measurement systems, measurement devices, radio wave reflection/re-radiation, etc., can solve the problem of wind shear detection that cannot be vertical, and the simulation results cannot fully reflect the weather conditions and other problems, to achieve the effect of improving early warning ability, improving detection recognition and early warning ability, and wide application prospects.

Active Publication Date: 2016-05-25
航天新气象科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an airport low-altitude wind shear detection method and system, which solves the problem that the simulation results in the current method of inverting the upper-altitude wind field through the numerical model cannot fully reflect the real weather conditions and cannot accurately detect the vertical direction. Problems with practical detection of windshear

Method used

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  • Detection method and system for low-altitude wind shear at airport
  • Detection method and system for low-altitude wind shear at airport
  • Detection method and system for low-altitude wind shear at airport

Examples

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Effect test

Embodiment 1

[0078] Example 1: Weather process of low-level jet stream on March 6, 2013

[0079] From 01:10 to 01:55 on March 6, 2013, a low-level jet stream occurred over the airport. A strong wind appeared 600m above the radar, with an instantaneous wind speed of 32m / s and a duration of about 1 hour (such as Figure 4 shown). Analyze the wind speeds at the heights of 120m, 180m and 300m from the wind sensors at the north, middle and south ends of the airport runway, as well as the boundary layer wind profiler radar, such as Figure 5 As shown, the low-level jet stream began to affect at an altitude of 300m at 1:10, and affected the ground over time, and affected the wind sensor at the south end of the airport runway at 1:30, and the wind sensor at the middle end of the airport runway at 1:40.

[0080] The wind shear data processing module of the present invention generates a wind shear warning at 1:10 of low-altitude consistency detection, and 1:20 of horizontal consistency detection, ...

Embodiment 2

[0081] Example 2: Weather process of a downburst on April 29, 2013

[0082] At 4:40 on April 29, 2013, the present invention outputs a vertical wind shear early warning. Analyze the horizontal wind data from the wind profiler radar ( Figure 5 ) and vertical wind speed data ( Image 6 ) found that before 4:40, the downdraft gathered above the height of 1000m, and the downdraft moved toward the ground at 4:40, directly affecting the ground. The vertical velocity of the boundary layer wind profiler radar at each altitude below 600m increases significantly, indicating that the high-altitude precipitation reaches the ground. An effective early warning of the downburst weather process that may occur before the precipitation begins.

[0083] The vertical direction consistency detection of the wind shear data processing module of the present invention generates a wind shear early warning at 4:40, indicating that the change in the vertical velocity of the atmosphere exceeds the sys...

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Abstract

The invention relates to a detection method and system for low-altitude wind shear at an airport. The detection method comprises: S01, wind profile radar data of a boundary layer and wind sensor data of an airport runway are collected in real time to obtain wind field information; S02, wind shear information is extracted and outputted; and when the wind shear information exceeds a system threshold value, an early-warning signal inside a system is triggered; and S03, the early-warning signal is determined. Besides, the detection system is composed of a data acquisition module for collection data to obtain wind field information, wind shear data processing module for extracting wind shear feature information, and the wind shear early-warning data output module for determining and outputting an early-warning signal. According to the invention, the air field above the air port is detected in real time based on the wind profile radar data of the boundary layer and early warning of wind shear in a horizontal direction and a horizontal direction is carried out according to the obtained actual meteorological observation data, so that the identification and early-warning capabilities of the wind shear weather of the air port can be enhanced well. Therefore, the method and system have the broad application prospects.

Description

technical field [0001] The invention relates to the field of atmospheric wind field detection, in particular to a method and system for detecting low-altitude wind shear at an airport. Background technique [0002] Low-altitude wind shear is a micro-scale weather phenomenon, which usually lasts only a few minutes to a few hours and ranges from a few meters to a few kilometers. Short, sudden, small impact range, very difficult to predict, forecast, etc., seriously threaten the safety of aircraft take-off and landing activities. [0003] At present, most countries such as the United States mainly use the Low Level Wind Shear Alert System (LLWAS) based on ground wind sensors for wind field detection. The LLWAS system has been developed to the third generation. 1. The wind direction sensors are divided into one group and divided into several groups, and the wind field and its changes are calculated according to the wind speed and direction detected by it, combined with the rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/95
CPCG01S13/95Y02A90/10
Inventor 杨川沈江林张明阳
Owner 航天新气象科技有限公司
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