Error analysis of testing system of ballistic parameters based on linear CCD

formulas of calculating angle of yaw and velocity are shown in this paper Through analysis of the formulas in detail, it concluded that if bullet's length and diameter of bullet is much longer, measuring error of angle of yaw is small. Experiments of simulated bullet flying under zero angle of yaw and under 10-degree angle of yaw are done to prove this relation. Data of angle of yaw, velocity and their measuring error is shown in chart. Influence factor of accuracy of measuring ballistic parameters is presented It includes magnification influence, light source influence, center distance of pixel influence, and data rate of CCD influence, velocity influence on angle of yaw, and angle of yaw influence on velocity. Every factor is analyzed in detail and methods are given to reduce the influence. So in different occasions, how to improve accuracy of measuring ballistic parameters is learned.