为了能够同时测量弹丸在斜入射时的速度和着靶坐标，基于天幕靶的六光幕交汇立靶测量原理，利用6套天幕靶在空中形成6个探测光幕，当弹丸以一定的角度入射并依次穿过6个光幕时，由信号采集与处理系统测得弹丸穿过各个光幕的时间间隔，再根据各时间间隔值和系统结构参数，便可以求出弹丸的速度、弹道俯仰角、弹道方位角。给出了测量原理及公式，并对测量误差进行了分析，结果表明，该方法具有精度高且易于工程化的优点。

In order to measure the projectile velocity and the target coordinates in any incident direction simultaneously, a concept of six-light-screen vertical targets based on sky screen was presented. Six detection screens were formed in space by six sky screens. When the projectile passed through the six screens in turn at an angle, the time intervals of projectile passing through the six screens were measured by the signal acquisition and processing system. The projectile velocity，incident angle and target coordinates were calculated according to the intervals and structural parameters. The measurement principle and the formulas were given, and the measurement error was analyzed. The results show that the concept is precise and easy to be engineer implemented.