Orthophoto Shield 2021

Orthophoto has the same geometric properties as a map for all objects located at ground level and can be linked to a reference system. Ground resolution of orthophoto varies and is stated in the metadata. For projects completed before 2020, the accuracy will range from 0.5-2 m depending on ground resolution and used terrain model. From 2020, the accuracy of the product is stated in the metadata information.正射影像（Orthophoto）针对地面所有地物均具备与地图一致的几何特性，且可与参考坐标系关联。其地面分辨率存在差异，相关信息会在元数据（metadata）中注明。 针对2020年之前完成的项目，产品精度范围为0.5~2米，具体数值取决于地面分辨率与所采用的地形模型。 2020年起，该产品的精度信息会在元数据中注明。