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The local government in Shandan County, Gansu Province recently built a 3D database to 【小题1】 (digital) map the Great Wall in order to ensure better protection. The database contains all the information 【小题2】 (collect) through unmanned aerial vehicle (UAV) and air remote sensing technology and forms millimeter-level high-precision 3D 【小题3】 (image) of several sections of the Great Wall.

The Shandan section, 【小题4】 was mostly built in the Han Dynasty or in the Ming Dynasty stretches over 200 km and 【小题5】 (consider) well-preserved. The existing sections in Xiakou Village are the main components. During the past years, the local government 【小题6】 (carry) out several projects to restore the Xiakou section and started 【小题7】 digitalization project in 2021.

The technical team used UAV photography and remote sensing mapping technologies 【小题8】 (take) photos of the Great Wall and the surroundings, 【小题9】 (cover) an area of about 25 square kilometer. The team then generated (生成) panoramic 3D models based on data analysis.

The advantage of digitalization is that it can break the limitations of time and space so that users have enough access 【小题10】 the understanding of the rich historical and cultural connotations (含义) of the resources.

This project is among the first batch (一批) of digital protection projects of the Great Wall in Gansu, providing a new approach for heritage protection and research.