Methods for Identifying the System Structural Parameters of the Four-light-screen Optical Target

In order to have accurate measurement of the system structural parameters of the four-light-screen optical target,the paper presents a method for identifying the structural parameters by using the firing results on the paper target and the sequence of bullets' morements.Based on the engineering design and the ideal model of the four-light-screen optical target,a mathematical formula in the real engineering was established.And then the method was discussed in detail and simulated in Matlab.The simulation results shows that the relative error of the structural parameter identified by the new method is less than 0.02%,which makes the coordinate measuring error less than 2 μm,ensuring the impacting position measurement accuracy of the four-light-screen optical target.