INSPIRE - Annex II Theme Elevation - ElevationGridCoverage - LUREF_NGL_DTM (2017)

In the scope of the International Civil Aviation Organization (ICAO) requiring countries and airports to provide electronic Terrain and Obstacle Data (eTOD), the Administration de la navigation aérienne has been tasked by the Government to take the steps necessary to comply with this requirement.

This Digital Terrain Model (DTM) is the result of a first LIDAR survey flight that has been done in October 2017 and is of a higher resolution than required by ICAO, thus for general purpose, harmonized according to INSPIRE requirements. For this reason this DTM also uses the national reference systems LUREF and NGL.

The data itself is split up in 4 different areas, which are specified as follows:

Area 1: The entire territory of Luxembourg;
Area 2: Terminal Control Area (this area is larger than the territory of Luxembourg);
Area 3: Aerodrome movement area;
Area 4: Category II or III operations (Runway 24).

Due to storage constraint, the raster image is made available in Luxembourg national projection (EPSG:2169) rather than European projection (EPSG:3035).
The raster in JP2 format can be downloaded from the URL provided in the INSPIRE GML under rangeSet/File/FileReference node or from the 'Source dataset' link in metadata information.

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在国际民用航空组织（International Civil Aviation Organization, ICAO）要求各国及机场提供电子地形与障碍物数据（electronic Terrain and Obstacle Data, eTOD）的框架下，卢森堡航空航行管理局受政府委托，采取必要措施以符合该合规要求。

本数字地形模型（Digital Terrain Model, DTM）基于2017年10月完成的首次激光雷达（LIDAR）测绘飞行生成，其分辨率高于ICAO的规定标准，可适用于通用场景，并已按照欧洲空间信息基础设施（Infrastructure for Spatial Information in the European Community, INSPIRE）的规范完成统一协调。为此，本DTM同时采用了卢森堡国家参考系统LUREF与NGL。

本数据共划分为4个区域，具体说明如下：
区域1：卢森堡全境领土；
区域2：终端管制区（该区域范围大于卢森堡领土面积）；
区域3：机场活动区；
区域4：二类或三类运行跑道（24号跑道）。

受存储空间限制，本次发布的栅格影像采用卢森堡国家投影坐标系（EPSG:2169），而非欧洲投影坐标系（EPSG:3035）。

JP2格式的栅格数据可通过INSPIRE规范下的地理标记语言（Geography Markup Language, GML）中rangeSet/File/FileReference节点所提供的链接下载，或通过元数据信息中的“源数据集”链接获取。

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