基于RTK定位的图像差分跑道异物检测

Image difference detection of FOD based on RTK positioning

机场跑道异物是威胁航空器飞行安全的重要因素之一,开展跑道异物的自动检测研究是有效保障航空器飞行安全的必然要求。针对异物检测问题,首先提出了基于DGPS(differential GPS)定位的图像差分异物检测方法,通过载波相位差分(RTK)技术获取道面图像的高精度位置信息,对同一位置的两幅图像进行对齐操作以满足图像差分的条件,接着采用直方图规定化的方法来完成亮度矫正,再通过差分实现异物检测,最后进行了实验验证。实验结果表明,该方法可有效检测尺寸不小于2 cm×2 cm的异物。

Foreign object debris is one of the important factors that threaten the flight safety of the aircraft.To carry out automatic detection research of foreign object debris is an inevitable requirement to effectively ensure aircraft flight safety.Focus on detection of FOD,firstly an image difference method based on DGPS was proposed,this method used RTK to obtain high-precision position information of the image of runway and aligned two images in the same place to meet the conditions of image difference.Histogram for specification was also developed to complete brightness correction.Then FOD could be detected by image difference.Finally,experimental verification was carried out.Experimental results show that the method can effectively detect foreign objects debris on airport runways with no less than 2 cm×2 cm.