Abstract: In order to address the issues of high production cost, high difficulty and low efficiency in traditional urban component investigation, multiple new surveying and mapping technologies with mobile measurement technology as the core have been applied. The technologies adopt a field collection method that combines vehicle-borne mobile mapping system, portable mobile scanning system and mobile terminal software, enabling rapid acquisition of component elements with the help of efficient component element extraction software. Furthermore, the integration of census results into the digital twin platform has laid the foundation for further application of component data.

Key words: urban component investigation, new surveying and mapping technology, mobile measurement technology, point cloud registration