本标准同样采用ISO 19170-1:2021，该标准支持离散全球网格系统（DGGS）核心的定义，以及基于AS/NZS ISO 19111 CRS和等面积地球DGGS的等面积地球参考系统（EAERSs）的、使用分区标识符、分区标识符和分区的几何、拓扑、RS的通用时空类。

This Standard identically adopts ISO 19170-1:2021, which supports the definition of a Discrete Global Grid Systems (DGGS) core, common spatio-temporal classes for geometry, topology, RS using zonal identifiers, zonal identifiers and zones, based on AS/NZS ISO 19111 CRS and Equal-Area Earth Reference Systems (EAERSs) for Equal-Area Earth DGGS.