ISO 19123:2005定义了覆盖空间特征的概念模式。覆盖范围支持从空间、时间或时空域映射到特征属性值，其中特征属性类型对于域内的所有地理位置都是通用的。覆盖域由坐标空间中的一组直接位置组成，这些位置最多可定义为三个空间维度和一个时间维度。覆盖的例子包括光栅、不规则三角网、点覆盖和多边形覆盖。覆盖率是许多应用领域的主要数据结构，如遥感、气象学和水深、高程、土壤和植被制图。 ISO 19123:2005定义了覆盖范围域和相关属性范围之间的关系。 定义了空间域的特征，而属性范围的特征不属于ISO 19123:2005的一部分。

ISO 19123:2005 defines a conceptual schema for the spatial characteristics of coverages. Coverages support mapping from a spatial, temporal or spatiotemporal domain to feature attribute values where feature attribute types are common to all geographic positions within the domain. A coverage domain consists of a collection of direct positions in a coordinate space that may be defined in terms of up to three spatial dimensions as well as a temporal dimension. Examples of coverages include rasters, triangulated irregular networks, point coverages and polygon coverages. Coverages are the prevailing data structures in a number of application areas, such as remote sensing, meteorology and mapping of bathymetry, elevation, soil and vegetation. ISO 19123:2005 defines the relationship between the domain of a coverage and an associated attribute range. The characteristics of the spatial domain are defined whereas the characteristics of the attribute range are not part of ISO 19123:2005.