Research on Acquirement Rate of CCD Vertical Target Coordinate Measurement System
CCD立靶坐标测量系统捕获率研究

The coordinate measurement principle and target imaging characteristic of CCD vertical target coordinate measurement system are introduced. The factors influencing the acquirement rate of the system are researched based on target characteristic, camera characteristic and video processing ability. Some methods are introduced to decrease the influence of disadvantageous factors and increase the acquirement rate of the system. These factors are taken into account in the design of the 4 m×4 m coordinate measurement system. After thousands of test, the system achieveds a acquirement rate of 95% about 5.8 mm target and a higher acquirement rate than 95% about bigger target.