Bulletin of Surveying and Mapping ›› 2025, Vol. 0 ›› Issue (1): 161-164,184.doi: 10.13474/j.cnki.11-2246.2025.0127

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Key technologies and applications for building Shanghai 3D spatial geographic digital base

CHEN Yan1,2, JIN Wen1,2, GU Jianxiang1,2   

  1. 1. Shanghai Surveying and Mapping Institute, Shanghai 200063, China;
    2. Key Laboratory of Spatial-temporal Big Data Analysis and Application of Natural Resources in Megacities, Ministry of Natural Resources, Shanghai 200063, China
  • Received:2024-03-27 Published:2025-02-09

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Abstract: Comprehensively promoting urban digital transformation is an important strategy for Shanghai to promote high-quality development.The scientific,refined, and intelligent governance of mega cities urgently requires the construction of a three-dimensional spatial geographic digital base based on geographical entities that can accurately map the physical world and integrate real-time urban operation information.This article analyzes the technical bottlenecks and difficulties of traditional surveying and mapping technologies in spatial geographic information collection, information fusion, and application.It also proposes ways to build a three-dimensional spatial geographic digital base in Shanghai from three aspects: rapid acquisition of spatial geographic information, precise fusion of multi-source information, and intelligent application of multiple scenes.A new model of geographic information data achievements and services for mega cities has been formed under the background of urban digital transformation.

Key words: 3D spatial geographic digital base, space-air-ground coordination, intelligent extraction, intelligent fusion of spatio-temporal data, geo-entity

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