Method for quickly obtaining radar basic reflectivity three-dimensional contour data
A contour and reflectivity technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of ambiguity in the determination of contours in quadrilateral grids, obstacles to rapid extraction of three-dimensional contours, etc., to facilitate manual interpretation and analysis, Good social and economic effects, the effect of promoting networking
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Embodiment 1
[0044] The present invention obtains the radar basic reflectivity data method fast, and its specific steps are as follows:
[0045] (1) In the radar reflectivity data to be processed, obtain the scanning layer data with a 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, where i represents the scanning line Any data point on , and 1 ≤ i ≤ the number of data points on the scan line:
[0046] The latitude and longitude coordinates of the radar center are: (radarLX, radarLY, radarHKm (unit: kilometer or kilometer)), on the scanning line where the elevation angle of a scanning layer of the radar is elevaAngle (unit: radian), and the azimuth angle is AZ_angle (unit: radian) , the distance to the first library is firstGate (unit: kilometers), and the length of the library is W (unit: kilometers), then the spatial latitude and longitude position coordinates of the i-th libr...
Embodiment 2
[0066] In this example, on the basis of Example 1, the non-closed contour is further searched, and the specific process is as follows:
[0067] A. According to the two vertices of the starting edge found from the boundary, the point coordinates on the starting edge equal to the reflectivity factor Z value are calculated by interpolation, and added to the point set of the contour line, and then on the starting edge Find a new side that also meets the conditions on the other two sides of the triangle, that is, the Z value is between the reflectivity values of the two vertices of the side, and the new side is used as the current starting side, and the two vertices of the new side Perform interpolation calculations to obtain the point coordinates on the side that are equal to the Z value of the reflectivity factor, add the point coordinates to the contour point set, and remove the current triangle from the triangles to be searched;
[0068] B. Find the triangle adjacent to the n...
Embodiment 3
[0072] In this example, on the basis of Example 2, the closed contour is further searched, and the specific process is as follows:
[0073] a. Search for any qualified side from the unremoved triangle as the starting side, that is, the value of the reflectivity factor Z is between the reflectivity values of the two vertices of the starting side, if no such starting side can be found Then end the closed contour search; if you find the starting edge that meets the conditions, go to the next step;
[0074] b. Perform interpolation calculation on the two vertices of the found starting edge to obtain the point coordinates on the edge that are equal to the reflectivity factor Z value (the point), and add the point coordinates to the contour point set; then in the starting edge Find a new edge that also meets the conditions on the other two edges of any triangle where the edge is located, that is, the Z value is between the reflectivity values of the two vertices of the edge, and...
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