Device and method for partial enlarged display of radar PPI images based on target details

Abstract

The invention discloses a device and a method for partial enlarged display of radar PPI images based on target details, which can perform real enlarged display of radar targets so as to separate out the target details in radar images. The device and the method have the following advantages: the radar target details of an important region are separated out through secondary sampling correlative with enlargement factor, the radar image data with polar coordinate formats is projected into a frame buffer corresponding to a screen rectangular coordinate system through scanning conversion processing, and finally the radar image data is output to an appointed enlarging window to perform display. Any radar partial original image is enlarged in a specific enlarging window and can display detail information of a target in the original image, the enlargement factor is adjustable as required, and if the enlargement factor is larger, the detail information of the enlarged image is more abundant. A device operator can obtain various attributes of the radar target as early and detailed as possible so as to make timely, scientific and accurate judgments and decisions.

Description

technical field [0001] The invention relates to radar image display technology, in particular to a radar PPI image partial zoom display device and method based on target details. Background technique [0002] With the advancement of modern command and control technology and the continuous improvement of air traffic control requirements for radar image display, the traditional radar image display method can no longer fully meet the needs of operators. [0003] In the traditional radar image display, the PPI (Plan-Position Indicator, Plane Position Display) display method is the main display method, which has the advantages of intuitive observation and large observation range. Usually, a radar outputs one radar image, and one image occupies the entire radar display screen, which is reasonable and necessary to grasp the air or sea conditions of the entire observation area; but at the same time, in addition to the overall situation of the entire airspace or sea area In addition...

AI Technical Summary

Problems solved by technology

One of the effective ways to achieve this goal is to partially zoom in on the area of ​​interest and display it. Through market research and technology retrieval, it is found that there are similar technologies in the market, but through careful observation and research, it is found that such zoom-in The display method does not actually achieve the ultimate goal of displaying the details of the radar target. The core technology of this method is to achieve the geometric magnification of the radar target by performing "pixel expansion" on the radar target at the rear end of the display, that is, to display the radar target with pixels As the center, copy the grayscale or color value of the pixel to other pixels around the pixel, and the area of ​​the copied pixel is determined by the magnification

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