Aerial view of the National Facility Images (2012) WMS

The orthophotomosaics are a composition of individual orthophotos, in principle of the central parts of each orthophoto. As a result, the overturn in the mosaics has been kept as small as possible. The orthomosaics are nationwide. Within the service 3 layers per year are offered, - High resolution orthophoto under the name Ortho10 - Low resolution orthophoto (RGB) under the name Ortho25 - Low resolution orthophoto (CIR) under the name Ortho25IR多幅正射影像镶嵌图（orthophotomosaic）由单幅正射影像拼接而成，原则上选取每幅单幅正射影像的中心区域作为拼接素材，因此镶嵌图的拼接错位被控制在最小范围。该系列正射影像镶嵌图覆盖全国全域。 本服务每年推出三类影像产品： - 命名为Ortho10的高分辨率正射影像 - 命名为Ortho25的低分辨率RGB正射影像 - 命名为Ortho25IR的低分辨率彩色红外（CIR）正射影像