Basic surveying and mapping results should be updated regularly. What urgently needed basic surveying and mapping results should be updated in a timely manner?

Basic surveying and mapping results should be updated regularly, and basic surveying and mapping results that are urgently needed for economic construction, national defense construction, social development, and ecological protection should be updated in a timely manner.

The results of basic surveying and mapping include the following points:

1. Astronomical surveying, triangulation, leveling, satellite geodesy, Data and maps obtained from gravity measurements.

2. Data and image data obtained from basic aerial photography. Basic geographical information system data, information, etc.

3. Basic geographical information remote sensing data obtained by earth observation by remote sensing satellites and other spacecraft.

4. National basic scale topographic maps, image maps and their digital products.

Basic surveying and mapping refers to establishing a unified national surveying and mapping benchmark and system, conducting basic aerial photography, obtaining remote sensing data of basic geographical information, measuring and updating basic national scale maps, image maps and digital products. Establish and update basic geographic information systems. In order to provide basic geographical information to the society, the government provides funds, is organized by the surveying and mapping administrative department, and is implemented periodically in accordance with unified planning and unified technical standards.

Basic surveying and mapping results refer to basic control measurement data, basic aerial images, satellite remote sensing images, basic maps, basic geographical information databases and other surveying and mapping results that carry basic geographical information obtained from the implementation of basic surveying and mapping work.

Basic surveying and mapping facilities refer to permanent surveying used for the acquisition, processing, storage, transmission, and distribution of basic geographic information in order to implement basic surveying and mapping and achieve resource sharing of basic surveying and mapping results. Signs, surveying and mapping instruments and operating equipment, computer software, hardware and network and other infrastructure.