Cartography BTA 1:5,000 (reference year 2014). Geodesic point and GNSS point Cartography BTA 1:5,000 (reference year 2014). Geodesic point and GNSS point

Layer of the BTA (reference year 2014) containing the reference points of geodesic networks and satellite positioning networks for the whole territory of Navarre at 1:5,000 scale. The BTA is an adaptation to the production of the National Cartographic Base (BCN) of the National Geographical Institute (IGN). BTA is the acronym for “Harmonised Topographical Base”. It is a data model agreed by the Autonomous Communities (CCAA) and approved by the Higher Geographical Council (CSG) of which there is a version v1 dated 2008.该图层属于基准年为2014年的统一地形基础底图（Harmonised Topographical Base，缩写BTA）数据集，包含纳瓦拉全境1:5000比例尺下的大地测量网与卫星定位网基准点。BTA是适配国家地理研究所（National Geographical Institute，缩写IGN）制定的国家制图底图（National Cartographic Base，缩写BCN）生产规范的数据集。“BTA”是“Harmonised Topographical Base”（统一地形基础底图）的缩写。BTA作为由西班牙自治区（Autonomous Communities，缩写CCAA）商定、高级地理委员会（Higher Geographical Council，缩写CSG）批准的数据模型，其v1版本发布于2008年。