WMS Surveying City of Bremen

Visualisation Service (WMS) Surveying City of Bremen.

The spatial reference of the official surveying system in Germany is realised by a uniform, homogeneous fixed point field throughout Germany. This consists of the Geodetic Base Network Points (GGP), Elevation Fixing Points (HFP), Heavy Strength Points (SFP) and Reference Station Points (RSP). The geodetic spatial reference is realised and secured both by permanently marketed fixed points on the earth’s surface as well as by the active reference stations of the official satellite positioning service SAPOS®. In addition to the provision and maintenance of the nationwide uniform fixed point field, the spatial reference in Bremen is condensed as demand-oriented by further official fixed points.
These are:
• Location fixes 1.- 4. Order
• Height fixes 2.- 3. Order
• Severity points 2.- 4. Order
• Recording points

不来梅市测绘Web地图服务（Web Map Service，WMS）。
德国官方测绘系统的空间参考依托覆盖全德的统一均质固定点场实现。该固定点场包含大地基准网点（Geodetic Base Network Points，GGP）、高程固定点（Elevation Fixing Points，HFP）、高强度控制点（Heavy Strength Points，SFP）与参考站点点（Reference Station Points，RSP）。大地空间参考的实现与保障，既通过地球表面永久标定的固定点位完成，也借助官方卫星定位服务SAPOS®的有源参考站得以实现。
除提供并维护全国统一的固定点场外，不来梅市的空间参考还会根据实际需求，通过额外的官方固定点位进行加密。此类点位包括：
• 一至四等平面控制点
• 二至三等高程控制点
• 二至四等强度控制点
• 记录点