Interpolation method for improving meteorological video display accuracy and continuity

Abstract

The invention discloses an interpolation method for improving the meteorological video display accuracy and continuity. The method comprises: reading radar video data to obtain data of each line, wherein the data of each line correspond to meteorological information of the azimuth angle of the line; dividing each line by adopting the same method, and obtaining data of division points; starting from the circle center of a sector formed by the lines, taking two adjacent lines, taking two adjacent spaced points on a first line of the two adjacent lines, taking two adjacent spaced points on the other line of the two adjacent lines, and calculating the distances ri and ri + 1 between the two points and the center of the fan-shaped circle, wherein a symbol i indicates the serial number of the point on each line; in the range of ri and ri + 1 distances, selecting the middle angle of the two lines to divide an area limited by the distances ri and ri + 1 into two parts, and assigning each partwith the value of a point close to the part; and repeating the steps 3) and 4) until the whole sector is filled.

Description

Technical field [0001] The invention belongs to the field of data processing and display of airborne weather radar detection results in an aviation system, and relates to an ARNIC708 bus data interpolation processing method based on an aircraft integrated display system display processing unit (DPU) to improve the accuracy of radar rainfall detection results. Background technique [0002] (1) Weather radar video display [0003] The airborne weather radar is mainly used to detect meteorological targets such as heavy rainfall ahead of the heading, and will display the echo information including the rainfall intensity through signal processing and display it in different colors according to the rainfall level. Airborne weather radars routinely use four-level display warnings, namely black, green, yellow, and red. The rainfall magnitudes corresponding to different colors are shown in Table 1. [0004] Table 1 The relationship between rainfall level and color [0005] [0006] (2) Existi...

AI Technical Summary

Problems solved by technology

[0006] (2) Existing display technology and level

[0019] a) The filled color is only the same as the color of the previous line, and no color selection judgment is made. When the angle difference between the two lines is large, the displayed information will be distorted;

[0020] b) Since the output video data is in polar coordinates (that is, the video is a fan-shaped area), the farther away from the dot, the larger the interval between each line. If it is supplemented according to the color of the previous line, the farther the distance will be , the more serious the information distortion is;

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