Approach to generate 3D‐printed terrain models using free software and open data sources: Application to military planning

摘要

The students of the Defense University Center at the Spanish Naval Academy (Marin, northwest of Spain) attend both the military studies and mechanical engineering degrees. These students are the future officers of the Spanish Navy. Among them, the Marine Corp students attend subjects focused on topography, Geographic Information Systems (GIS) and an amphibious landing. In this framework, this paper presents an example of an application of the use of physical models for a better understanding of the terrain, as well as for landscape design or military planning. Through the use of different GIS and Computer-Aided Design software, the students have to demonstrate their capabilities to create and produce three-dimensional (3D) printed models. This work shows how the use of printed scale models of the terrain offers visualization advantages and more understanding to students when compared with virtual models or traditional maps. Additionally, a methodological approach is presented aiming to produce 3D-printed models using open data sources and free license software. From a point cloud of data, this software allowed creating and editing the virtual model (scales, vertical exaggeration, smooth, etc.), as well as to merge different point clouds. The methodology was applied to the Island of Tambo (Galicia, Spain). Using Light Detection and Ranging data, several printed scale models were elaborated on, including the Digital Terrain Model and Digital Elevation Model. Additionally, a bathymetric model was created, aiming to assist in the design of an amphibious operation.