| 摘要 |
The present invention relates to a method and system for accurately determining the point of impact of a bullet on a shooting disc or target plane and optionally the position of the shooter, wherein a number of light curtains, which may be formed by light diodes and light sensitive sensors and which are arranged in a predetermined pattern, are used for registering time instants of the passage of the bullet projectile through predetermined light planes by detecting the shadow cast by the bullet. Differences between the measured times and/or the measured times themselves are then used for calculating the velocity of the bullet and the points at which the trajectory of the bullet intersects the light planes and the target plane, which may be arranged or located behind or in front of the target disc / target disc arrangement of the system having the particular pattern of light curtains, allowing for the calculation of the centre impact point of the bullet on the shooting disc or target plane in 3D using at least one of known and/or calculated parameters. |
