Precision Analysis and Applications of Trigonometric Leveling with Total Station

The basic principle and accuracy of total station trigonometric leveling method are discussed by introducing the measurement methods such as reciprocal leveling, intermediate station observation and one-way double targets (prism) trigonometric leveling. By analyzing the relevant problems in practical application, it is considered that the main factors affecting the height difference measurement accuracy of the above methods are the size of zenith distance and its observation error, the error of atmospheric vertical refraction coefficient measurement. The measurement error of instrument height and target height is also one of the influencing factors, and the influence of ranging error is slight. Total station trigonometric leveling method can be widely used in urban and engineering surveying.