Three-dimensional visualization method of doppler weather radar based on WebGL
A weather radar and three-dimensional technology, applied in the field of three-dimensional visualization of Doppler weather radar based on WebGL, can solve the problems that the meteorological industry has not been well promoted and applied, and the general three-dimensional imaging speed and effect have no advantages.
Pending Publication Date: 2019-04-12
江苏省气象信息中心
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[0003] At present, the three-dimensional display processing software of weather radar echoes at home and abroad mainly adopts C / S architecture. For different applications, different client software needs to be installed on the machine. The industry has not been well promoted and applied
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[0051] The specific embodiments of the present invention will be described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0052] Unless otherwise expressly stated otherwise, throughout the specification and claims, the term "comprising" or its transformations such as "including" or "including" will be understood to include the stated elements or components, and not Other elements or other components are not excluded.
[0053] According to the characteristics of the three-dimensional spatial distribution of the CINARD-SA new-generation Doppler weather radar echo data, the present invention studies related three-dimensional modeling and display algorithms, and converts the Doppler weather radar data display mode from two-dimensional to three-dimensional through WebGL technology , Reconstruct the spatial shape of the radar echo, make it more three-dimensional, improve the speed and effect of...
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The invention discloses a three-dimensional visualization method of a doppler weather radar based on WebGL. Doppler weather radar echo data are analyzed, and the characteristic of the doppler weatherradar carries out azimuth-by-azimuth scanning in the radial direction of fixed elevation angle is based on. The method comprises the steps that, firstly, a data preprocessing is carried out on cardinality data files generated by the doppler weather radar, then, according to the characteristics of cone surfaces distribution with different radial distance of radar echo data, an isosurface is constructed by adopting the method of trapezoidal cylinder subdivision, finally, a front-end asynchronous processing method is proposedwhen drawing at web end, and web-oriented doppler weather radar echo three-dimensional graphics rendering is realized by using the WebGL technology. According to the three-dimensional visualization method of the doppler weather radar based on the WebGL, the effect of three-dimensional echo reconstruction of the doppler weather radar is improved, the speed of an interactive display such as three-dimensional rotation is increased, at the same time, no need to rely on various platforms or platform-dependent plug-ins, three-dimensional, dynamic, continuous, multi-level radar echo three-dimensional graphics are browsed and queried directly through web, and a high degree of visualization method is provided for future meteorological analysis.
Description
Technical field: [0001] The invention belongs to the technical field of weather forecasting research, and particularly relates to a WebGL-based Doppler weather radar three-dimensional visualization method. Background technique: [0002] The new generation of Doppler weather radar is one of the most commonly used detection data for weather forecasters. It is of great significance for studying the formation of precipitation, analyzing small and medium-scale weather systems, and alerting strong convective weather. It is an important tool for small and medium-scale weather monitoring. Meteorologists have provided great help in making accurate forecasts. In the past, the visualization of weather radar echoes mainly stayed on the two-dimensional plane. Even if the three-dimensional field data is obtained, the display and data analysis are still PPI (plane position display), CAPPI (contour plane position display) and RHI (range height display) Isoplane images cannot well express the sh...
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Login to View More IPC IPC(8): G01S13/95G01S13/89
CPCG01S13/89G01S13/95Y02A90/10
Inventor 焦圣明唐红昇鲍婷婷殷笑茹李玉涛陈景丽耿丹马斌
Owner 江苏省气象信息中心