GB 12341-1990
Abolished1∶25000，1∶50000 and 1∶100000 topographic maps--Specifications for aerophotogrammetric field work
1∶25000、1∶50000、1∶100000地形图航空摄影测量外业规范
Application Summary AI generated
This standard specifies the technical requirements and procedures for field operations in aerophotogrammetric mapping at scales of 1:25,000, 1:50,000, and 1:100,000. It is applied in the production and revision of medium-scale topographic maps, guiding tasks such as ground control point surveying, field identification, and verification of photogrammetric data. The standard is primarily used by national mapping agencies and surveying organizations in China for land surveying, resource management, and infrastructure planning.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.