Geodetic basic network points

The 185 Geodetic Base Network Points (GGP) distributed nationwide in Baden-Württemberg ensure geodetic spatial reference.These are in particular the points of the DREF91 and the compaction stage (BWREF) located in BW as well as selected underground marketed altitude festival points 1. Order. Each GGP has position, height and gravity values.分布于巴登-符腾堡州全域的185个大地基准网点（Geodetic Base Network Points，简称GGP）为该区域提供大地空间参考基准。这些测点具体涵盖位于该州的DREF91控制点、巴登-符腾堡参考框架（BWREF）测点，以及经遴选的一等地下标定高程基准点。每个GGP均包含位置坐标、高程数值与重力场参数。