Large-scale 3D Measurement Based on Laser Ranging

In the process of hull block construction, the laser ranging method is used widely applied to acquire the large-scale 3D data. The paper was focused on the laser ranging principle and the structure of the instrument designed according to the principle. Such a device consisted of a laser ranging sensor and 2D turntable. The data were collected with the instrument device and then obtained through the coordinate transformation. Then, the random errors and system errors of these data were analyzed and the system errors were compensated. In the meantime, corresponding supporting application software system was developed. Error treatment results of experimental data obtained with measured large-scale 3D information further validated the proposed method.