1. Automatic target reading system development;ZHANG,2006
2. Measurement system for precise bullet location and signal processing circuitry;NI,2005
3. Study on measurement method for projectile location based on light screen;HAN,2008
4. Principle of measuring impacting position of vertical target of six-light-screens;FENG,2008
5. Optical sensor and method for detecting projectile impact location and velocity vector;Gauthier,2004