Modeling and error analysis of laser target pose measurement system

Regarding the demand of large size composite precision measurement, a new method for laser target pose measurement system was proposed. First, the measuring principle was introduced, and the relationship between incident light pose and position of the camera target spot was established by using the nonparametric model calibration method based on interpolation. The position relationship between camera coordinate and laser target coordinate was solved by using back-calculation method based on reference prism, and the overall mathematical model was established. Then for this model, the error sources of the measurement system were analyzed and the simulation results of factors which affect measurement accuracy were given. Finally, the feasibility and effectiveness of the model proposed was verified by experiment.