Theory of intersectant measurement for linear CCD array camera is studied in this paper.The precision of missile and cannonball are obtained in real time by practical target replacing a dummy target.

• 分析线列CCD摄像机交汇测量的原理,以空间虚拟的光电靶代替实物靶来实现对弹丸目标脱靶量的实时获取。