Principle and analysis of high altitude projectile location measurement using multi-screen target method

Low altitude optical scoring measurement system can't meet the requirement of current high altitude projectile location measurement and can't measure the Z coordinate in the flying projectile trajectory. The measurement principle of the multi-screen target method is put forward, which is composed of the high sensitivity photoelectric detection target and can solve the problem of three direction coordinate measurement when the flying projectile explodes in high altitude. The mathematic model of the measurement system is set up and the high sensitivity flash optic-electric detection target is used to measure the Z coordinate that the four cross screen measurement system can't realize. Differential method is applied to analyze the error of the measurement system, which comes from the angle of intersection screen, the thick of screen, the time and distance measurement. Through error analysis, the measurement system can satisfy the requirements.