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Method for quickly acquiring radar basic reflectivity vector graphic data

A technology of vector graphics and reflectivity, which is applied in the field of rapid acquisition of radar basic reflectivity vector graphics data, can solve the problems of increasing calculation overhead, increasing product data volume, data obstruction, etc., achieve good technical effects, shorten response time, and quickly The effect of getting data

Inactive Publication Date: 2018-12-18
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method, on the one hand, increases unnecessary computing overhead, and on the other hand, introduces redundant data to a certain extent, increases the data volume of product data, and brings unnecessary obstacles to applications such as data transmission.

Method used

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  • Method for quickly acquiring radar basic reflectivity vector graphic data
  • Method for quickly acquiring radar basic reflectivity vector graphic data
  • Method for quickly acquiring radar basic reflectivity vector graphic data

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0027] The present invention obtains radar basic reflectivity vector graphic data method fast, and its concrete steps are:

[0028] (1) From the radar reflectivity data to be processed, obtain the scanning layer data of the preset elevation angle, and calculate the spatial position coordinates of the i-th library data on the scanning line of each azimuth angle in the scanning layer:

[0029] The latitude and longitude coordinates of the radar center are: (radarLX, radarLY), and on a scanning line whose elevation angle is elevaAngle (unit: radian) and azimuth angle is AZ_angle (unit: radian) of a certain scanning layer of the radar, the first gate distance is firstGate (unit: radian) kilometers), and the library length is W (unit: kilometers), then the spatial latitude and longitude position coordinates of the i-th library data are calculated according to the following formula, where i represents any data point on the scanning line, and 1≤i ≤ the scanning line The number of dat...

Embodiment 2

[0043] For the trapezoidal grid in the basic reflectivity vector graphics data of the scanning layer obtained in Example 1, the corresponding colors are assigned according to the reflectivity data of the four vertices of each trapezoidal patch, forming a pattern that can represent different echo values. The base reflectance color image data. It is also possible to use the color interpolation function of computer graphics to further give the quadrangle a color with a gradient effect.

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Abstract

The invention discloses a method for quickly acquiring radar basic reflectivity vector graphic data. The method comprises the steps that data of a scanning layer in a preset elevation angle is acquired from to-be-processed radar reflectivity data, and space position coordinates of i library data on scanning lines of all azimuth angles in the scanning layer are calculated to obtain a radar datapoint structure corresponding to all library data on the various scanning lines; and in the radar data point structure, two points at the adjacent i library and i+1 library are sequentially acquired from each of two adjacent scanning lines, a total of four points are acquired, and the four points are sequentially connected to construct a trapezoid patch by taking the four points as vertices, and then all trapezoid patches are constructed. The method is beneficial to global sharing of radar product data, provides effective decision support for reduction and prevention of meteorologicaldisasters and has the good social and economical effect; and meanwhile by means of the quick data obtaining capacity of the method, the method has the good technical effect on the capacity of quicklyobtaining the data and can shorten the response time of relevant departments to the disasters.

Description

Technical field: [0001] The invention relates to a method for quickly acquiring vector graphic data of radar basic reflectivity. Background technique: [0002] At present, the acquisition of conventional radar basic reflectivity data is based on regular grid calculation, and the result data similar to pixel pictures is obtained. In this process, there is a big difference between the arrangement of the regular grid and the radar scanning method. Therefore, it is necessary to perform a large number of interpolation calculations on the existing radar detection data of this layer to obtain the correspondence of each regular small grid. The detection data value of , so as to finally obtain the corresponding basic reflectance data. This method, on the one hand, increases unnecessary computing overhead, and on the other hand, introduces redundant data to a certain extent, increases the data volume of product data, and brings unnecessary obstacles to applications such as data trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 路明月王新昊闵锦忠毛远翔毕硕本
Owner NANJING UNIV OF INFORMATION SCI & TECH
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