C#开发，实现了模拟圆形雷达目标扫描显示界面，带余辉效果 背景、角度、圆环数量、扫描速度等参数均可设置 压缩包中含源码及应用示例；-C# development, to achieve a simulation of circular scanning radar target display interface with afterglow effect background, angle, circle the number of the scanning speed and other