一种地面合作目标的研究与设计

Research and design of a sort of cooperative target on the ground

为了解决基于GPS/惯导为主导航系统的无人机在自主着陆过程中,GPS受他国控制和易受干扰的潜在危险问题,提高无人机利用计算机视觉完成全天候自主着陆的实时性,通过对大气窗口及透过率的研究,确定波段为8～12μm为无人机载视觉系统的对应波段,并由此研究与设计出地面特殊的可控温合作目标。在快速定位着陆点的同时,确定出无人机着陆的方向。对合作目标图像进行预处理和识别后,其所含目标的数目及其识别时间表明,所设计的合作目标很好地提高了无人机自主着陆导引的实时性。

GPS of UAV＇s navigation system based on GPS/INS is controlled by the other country and easily interterea when UAV is navigating and landing. To solve this potential dangerous problem, the special cooperative target on the ground that can control its temperature is studied and designed for improving the real-time capability of vision-based UAV automatical landing in all-weather. The study of the target is based on the permeation ratio of light-wave and atmospheric windows. So the wave bands （8micro to 12 micro） are selected for matching the vision system. The direction of UAV＇s landing is confirmed when the landing point is positioned fleetly. After the preprocessing the cooperative target images, the number of the target including in the cooperative target images and the recognition time indicates that the special cooperative target improves the real-time capability of UAV＇s automatic landing.