广角天幕靶靶距测量方法改进

Improved Distance Measurement of Wide-angle Sky Screen

为了提高现有广角天幕靶的靶距测量精度,提出了一种采用激光瞄准对两台广角天幕靶进行布放和调整的方案.将激光器安装于每台广角天幕靶的箱体上,使得激光器发出的激光束与天幕靶光幕面垂直,现场布靶时用两台天幕靶的激光器相互瞄准,便可以使两台广角天幕靶光幕面达到较高平行度,同时保证两靶高度一致,从而提高广角天幕靶的靶距测量精度,使靶距测量误差由原来3‰减小到0.04‰.

In order to increase the measurement precision of the distance between two wide-angle sky screens, a project based on laser aim that can adjust two sky screens is presented. The laser is fixed on boxes of two wide-angle sky screens,and the laser light should be vertical to the screens. When the wide -angle sky screen is disposed on experimental site,two laser lights are aimed each other which can make the two sky screens parallel and at same height. Accordingly, the method advances the measurement precision of the distance between two wide-angle sky screens, and the error of the distance diminishes from 3‰ to 0. 04‰ .