摘 要：在光栅显示技术普及之前，二维的雷达显示一般采用长余辉 CRT 显示屏，雷达图像靠天线转动直接在屏幕上刷新，帧频和天线转速相同。由于天线转速很慢，需要借助荧光粉的余辉来保持回波图像。显然，天线转速越慢所需的余辉越长。此外，长余辉还是信号积累的一种手段，能有效地实现信号的线间积累和帧间积累，有助于人工目标检测。文章叙述了雷达显示中的余辉概念，说明了光栅雷达显示中余辉衰减的基本原理和控制方法。
关键词：雷达显示；余辉衰减；方法
DOI:10.19850/j.cnki.2096-4706.2021.15.018
中图分类号：TN957.5 文献标识码：A 文章编号：2096-4706（2021）15-0070-03
Study on Afterglow Attenuating Method of Raster and Radar Display
XU Lijuan, YAO Jie
(Jiangsu Automation Research Institute, Lianyungang 222061, China)
Abstract: Before the popularization of raster display technology, long afterglow CRT display is generally used for two-dimensional radar display. The radar image is directly refreshed on the screen by the rotation of the antenna, and the frame rate is the same as the rotation speed of the antenna. Because the rotation speed of the antenna is very slow, it is necessary to maintain the echo image with the help of the afterglow of the phosphor. Obviously, the slower the rotation speed of the antenna, the longer the afterglow is required. In addition, long afterglow is also a means of signal accumulation, which can effectively realize the line to line accumulation and frame to frame accumulation of signals, and is conducive to artificial target detection. This paper describes the concept of afterglow in radar display, and explains the basic principle and control method of afterglow attenuation in raster and radar display.
Keywords: radar display; afterglow attenuation; method
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作者简介：徐利娟（1983—），女，汉族，江苏沭阳人，工程师，本科，研究方向：综合显示与控制技术。