Core registration current altitude database Netherlands (AHN)

The Registration Current Altitude File Netherlands (AHN) consists of a file containing detailed altitude data from the whole of the Netherlands. The height of each square meter of the ground level and also of the buildings is known.荷兰现行高程注册文件（AHN）包含覆盖荷兰全境的详细高程数据，完整记录了该国境内每平方米地面与建筑物的高程信息。