基于OpenGL的SAR实时图像显示

摘要

Since imaging radar needs to display massive image data and can present many graphic details in practical opera⁃tion,the requirements in the aspects of displayed authenticity and real⁃time capacity are very high. When image is scrolling in display screen,the image data consists the entered original image data and new entered image data. The two sets of image data are displayed in the same plane. It is noticed that when image data displays,it also requires to overlay the relevant flight⁃parameter information and time information. To satisfy the display requirements of imaging radar,dual⁃cache technology and fusion technology of OpenGL system were adopted in VxWorks operating system,by which the smooth,complete,dynamic and real⁃time anima⁃tion effect can be obtained.%成像雷达在实际的操作中显示的图像数据量颇大，并且能呈现出图形的许多细节，因此，对显示的现实性、实时性要求很高。图像在屏面空间滚动时，数据中会包含已经输入的原始图像数据，同时也会滚动显示新录入的图像数据，两组图像数据在同一平面显示，而且要注意到在进行图像数据显示时，还要求在其空间上叠加相应的飞参信息和时间信息。因此，为满足成像雷达的显示需求，在VxWorks操作系统下通过采用OpenGL系统具有的双缓存技术和融合技术，可以获得平滑的、完整的、动感的、实时的动画效果。