TY - JOUR AU - Yepes Rodríguez, Fernando PY - 2018/11/01 Y2 - 2024/03/29 TI - The co-production of a high resolution GDEM: The TREx program and the Spanish participation JF - REVISTA INTERNACIONAL MAPPING JA - MAPPING VL - 27 IS - 190 SE - Artículos Científicos DO - UR - https://ojs.revistamapping.com/MAPPING/article/view/145 SP - 28-31 AB - <p>The objective of this article is to describe the recently created international<br>program TREx (TanDEM-X High Resolution Elevation Data<br>Exchange Program) whose purpose is to obtain a digital surface model<br>with global coverage (GDEM) of high resolution and quality. The role<br>of Spain in the TREx program is also discussed.<br>The digital models of surface have multiple applications in the civil<br>field and in the military field: geological or hydrological studies, analysis<br>of mobility, deployment of units, etc. The GDEMs try to represent<br>the elevations of the entire globe while maintaining a level of quality<br>in the spatial resolution and in the absolute and relative precisions of<br>their coordinates.<br>The TREx program, due to its global coverage, needs a great international<br>cooperation. Currently, 32 nations participate, including Spain.</p> ER -