THE CONTRIBUTION OF UNMANNED SYSTEMS TO UPDATING FOREST MAPS

摘要

Unmanned systems, also known as UAV (Unmanned Aerial Vehicles) or UAS (Unmanned Aerial Systems), are self-contained aircraft with an onboard navigation system and the ability to program predefined flight points in a mapping area. In forest areas, the creation of Digital Terrain Model (DTM) from the photogrammetric performance of aerial photography is made difficult by the covering of the ground with the trees' canopy. The digital model of the canopy is different from the ground one. While for the TCM (Tree Canopy Model) we have visibility, for D.T.M it depends on the canopy closer and the technique of taking and performance. This paper explores the potential utilization of UAV in forest areas in the production of 2D and 3D orthophotomaps. The aim of the paper is to compare the cartographic products in forest areas, with photogrammetry, LiDAR (Light Detection And Ranging) mapping and their combination when taken from manned aircrafts and UAV. Finally, cooperation proposals of photogrammetry and LiDAR are being developed for forest applications in the context of the use of UAV.