简要分析了目前普遍采用的小孔成像测距模型的原理及存在的问题,提出了一种基于序列图像的测距算法,并据此开发出试验机,进行了初步的实际道路试验。-A brief analysis of the principle now widely used models ranging pinhole imaging and problems, a new algorithm based on image sequences ranging, and accordingly developed a test m