Construction and Optimization Method of Large-scale Space Control Field based on Total Station

Abstract

The construction and precision control of the global control field is the basis of precision measurement in large-scale spaces. The total station as a measuring equipment is selected to establish a high precision measurement control field. Firstly, the three-dimensional coordinates of the global control points are obtained from multiple stations based on the total station. Then the parameters of registration are solved using Singular Value Decomposition algorithm. Next, with the constraint of high precision angle measurement value, the coordinate registration results are optimized by Jacobian matrix iteration algorithm and the measurement precision is increased. Finally, this method is applied to shape measurement of ship section surface. The effectiveness of the method is proved by comparing the distances between control points at different stations.