GPS技术和全站仪在变形监测中的应用

long with the development of GPS technology, the engineering survey method went through the historic change in the survey field.GPS technology has a function with full-capability, global, full-time, continuity and real-time performance, precise 3D navigation and position etc. It has been successfully applied into engineering survey.Total Station is a highly automated measuring instruments in the field surveying with high accuracy and wide application, but it is restricted by the factors like sighting conditions and measuring distances and so on.This paper discussed the combination between them according to the deformation monitoring of Yantai North Station highway bridge , to explore measurement practices so that these two instruments in the actual measurement are able to improve efficiency in deformation monitoring, reduce outside interference, reduce the labor intensity of workers and guarantee point accuracy.