CTI provides deformation monitoring services related to engineering site monitoring and measurement. "The content of deformation monitoring should be determined according to the nature of the deformed body and the foundation conditions. Deformation monitoring mainly involves the acquisition of deformation information, the analysis and interpretation of deformation information, and deformation prediction. Mainly The deformation monitoring methods include ground conventional measurement technology, ground photogrammetry technology, special and dedicated measurement methods, etc. Among them, the fully automatic tracking total station provides a good technical means for the automatic detection of local engineering deformation, which can be carried out to certain extent. Unattended, all-weather, all-round automatic detection within the scope."