本文给出了一种电视跟踪系统数字化原理,和数字处理系统方块图,并做了测角误差分析,它适用于以天空为背景的飞行器的跟踪。这种方法可测得视场中飞行器的象面积,因而不只可以获得飞行器的角信息,还可以提取更多的信息,为扩大电视跟踪的应用创造条件。当多目标在摄象管靶面成象,在场的方向不重叠时它有检测多目标能力,对视场中多个目标可以识别编码。 This paper presents a digital TV tracking system principles, and digital processing system block diagram, and made the angle error analysis, which is suitable for the sky as the background of the aircraft tracking. This method can measure the image area of ​​the aircraft in the field of view, so that not only can the aircraft angle information be obtained, but also more information can be extracted, which can create conditions for expanding the application of the television tracking. When multiple targets are imaged on the target surface of a video tube and there is no overlap in the presence of the target, it has the ability to detect multiple targets and encodes multiple targets in the field of view.