Geodetic reference systems — height points

The German Main Height Network (DHHN) describes the height reference system with the official heights above NN. The height points (NivP) are determinations that are geodeticly determined, secured and measured. Their data is recorded under a point mark in the proofs of the fixed points. The proofs of the fixed points are divided into an overview of the fixed points based on the topographic map 1:25,000 (TK25) as a point signature with point number, a point description (measurement sketch) and a point file (height value).

德国主高程基准网（German Main Height Network, DHHN）阐述了基于法定高程基准面（Normalnull, NN）的高程基准体系。其包含的高程点（NivP）均为经大地测量确定、加固并实测的点位成果，相关数据均收录于固定点验证资料的点位标记项下。固定点验证资料以1:25000比例尺地形图（TK25）为依托，划分为固定点概览，该概览涵盖点位标识（含点号）、点位说明（测量草图）以及点位档案（高程值）三类内容。