Target measurement system for precise projectile location

摘要: A target system for measuring the location and diameter of a projectile in frame reference, including vertical horizontal banks light sources projecting collimated beams across area, corresponding receptors indicating passing through frame. plurality receive impinging from each source, receptor receiving predetermined portion beam. When beam is interrupted by projectile, indicate increments less than width Output signals are converted to numerically coded coupling output amplifiers, number receptors, according coding pattern.