Digital Model of Land MNT LIDAR 2014 and OrthoExpress 2014 on the Aquitaine Coast

A 1 m Digital Terrain Model was developed by the IGN based on a LIDAR survey launched in autumn 2014 as part of a partnership between BRGM and IGN for the Observatoire de la Côte Aquitaine; the aim is to monitor the evolution of the Aquitaine coastline. This survey was coupled with aerial shots for the development of a 10 cm resolution orthophotograph. The MNT is cut into 604 square slabs of 1 km. Overall, the right-of-way corresponds to a minimum band of 200 m on either side of the coastline established by the Observatoire de la Côte Aquitaine.1米分辨率数字地形模型（Digital Terrain Model，DTM）由法国国家地理研究院（Institut Géographique National，简称IGN）基于2014年秋季启动的激光雷达（Light Detection and Ranging，LIDAR）测量项目构建。该项目是法国地质与矿业研究局（Bureau de Recherches Géologiques et Minières，简称BRGM）与IGN为阿基坦海岸观测站（Observatoire de la Côte Aquitaine）开展的合作项目之一，旨在监测阿基坦海岸线的演变情况。本次测量同步配套航空摄影作业，用于制作分辨率为10厘米的正射影像图。该数字地形模型被切割为604块边长为1千米的方形瓦片。总体而言，该数据集的观测覆盖带对应阿基坦海岸观测站划定的海岸线两侧各至少200米的带状区域。