在半球成像系统实时跟踪目标的过程中 ,从受到光扰动影响的圆环像中迅速准确地提取圆环的中心是一个关键。为适应半球成像系统跟踪目标的实时性和抗扰性要求 ,根据圆的几何对称性 ,提出了一种矢量纠偏的抗光扰动的圆环中心确定方法。实验结果表明 ,对于无扰动的圆环图像其误差小于 1个像素 ;对于有扰动的圆环像误差不超过 5个像素。 In the process of tracking a target in real time by the hemisphere imaging system, it is crucial to extract the center of the ring quickly and accurately from the annulus affected by the light disturbances. In order to meet the real-time and anti-jamming requirements of tracking target of hemispherical imaging system, according to the geometrical symmetry of the circle, a method of vector centering anti-light disturbing ring center is proposed. Experimental results show that the error is less than 1 pixel for undisturbed ring images and no more than 5 pixels for disturbed ring images.