Abstract: For the measuring difficulty of the vertical target dispersion when multiple projectiles impact simultaneously, a measuring method for the space-time parameters of multiple projectiles is proposed by using two CCD vertical targets. There is an angle between two CCD target surfaces in vertical direction. When several projectiles arrive at target surface Ⅰ at the same time, the projectiles in the non-horizontal direction are separated on target surface Ⅱ because they fly over different distance between two CCD targets. The projectiles in the horizontal direction cannot be separated and are matched in accordance with the principle of pixels order matching. The impact coordinates of multiple projectiles with sequence and flight velocity can be calculated through the coordinates projection and the temporal-spatial matching from Target Ⅱ to Target Ⅰ. The simulation result proves that the proposed method can effectively address the issue of eliminating the false projectiles on single CCD target when multiple projectiles impact all at once.

Key words: ordnance science and technology, super-high firing rate weapon, dual CCD vertical target, multi-target temporal-spatial match, vertical target dispersion