中国海陆空图幅集成数据集(2012、2021年)

该数据为海陆空图幅集成数据集。主要包括中国海图、陆图、空图的1：50万和1：25万图幅的原始矢量数据和集成到正二十面体六边形离散格网与GeoSOT格网上的GeoJSON数据。该数据制作时间为2022年，海陆空数据根据国家标准制作，其中海图数据时间为2021年，陆图和空图为国家2012年标准。
该数据集获得2018年国家重点研发计划“地球观测与导航”专项项目“全球位置框架与编码系统”课题一“多重全球剖分网格与统一编码的理论与方法”（课题编号：2018YFB0505301 ）资助。

This is an integrated dataset of sea, land and air map sheets. It mainly encompasses original vector data of 1:500,000 and 1:250,000 scale map sheets for Chinese nautical, land and aeronautical charts, alongside GeoJSON data integrated onto both the regular icosahedral hexagonal discrete grid and the GeoSOT grid. This dataset was compiled in 2022, with the sea, land and air data developed in accordance with national standards: the nautical chart data adheres to the 2021 national standards, while the land and aeronautical chart data follows the 2012 national standards.

This dataset was funded by Task 1 "Theory and Method of Multiple Global Subdivision Grids and Unified Coding" under the Project "Global Positioning Framework and Coding System" of the "Earth Observation and Navigation" Special Project of the 2018 National Key R&D Program of China (Project No.: 2018YFB0505301).