Ray-Tracing Method for Deriving Terrestrial Laser Scanner Systematic Errors

摘要

A new ray-tracing method for deriving the effect of instrumental systematic errors in terrestrial laser scanner (TLS) instruments is proposed. Three cases of mirror inclination error for the panoramic scanner architecture are used as examples to demonstrate the applicability of the method. The results show that all three errors can be effectively compensated for by model variables already inherent to the augmented TLS positioning equations. Specifically, the effects can be compensated for by the collimation axis and trunnion axis error terms and the tertiary rotation angle of the exterior orientation parameters. (C) 2016 American Society of Civil Engineers.