Analysis of the structure and properties of triangular composite light-screen targets

With the development of light-screen targets for ballistic projectiles, not only must accuracy in the mea-surement of projectiles be assured but also the installa-tion of the system and error compensation in the initial calibrations must be considered. We have designed a tri-angular composition light-screen target that is easy to install, derived expressions for the speed and direction of ballistic trajectories based on intersecting-CCD vertical targets, and conducted analyses of the points of impact and projectile speed. Results show that errors in the point of impact are affected by the coordinates of the target plane. Positional errors gradually increase with the dis-tance from the origin. The horizontal angle error with the trajectory line does not exceed 0.3 degrees, whereas the vertical angle error does not exceed 0.2 degrees. Errors in the speed of the projectile remain relatively stable when the vertical coordinates are greater. Errors in speed and direction, as well as error fluctuations, are smaller on the x = 0 plane, making it the ideal region for error compensation in initial calibrations.