OPTIMUM NUMBER AND POSITIONS OF TERRESTRIAL LASER SCANNER TO DERIVE DTM AT FOREST PLOT LEVEL

Abstract. Remote sensing of forest landscape is sometimes quite challenging, considering the rugged terrain, remote areas and presence dense canopy. LiDAR capable generating three-dimensional (3D) structure forest. But when research focused on a small area that needs information Terrestrial Laser Scanner (TLS) proves to be an efficient way acquiring information. TLS instrument used acquire data from ground surface level. Ground under canopy are acquired with more accuracy precession compared aerial techniques. When survey done, scan positions number scans important parameters consider datasets plots. In this research, analysis carried out determine optimum needed sufficiently generate points Digital Terrain Model (DTM). The considers two plots 25m × different tree densities. Different scanning combinations best pattern for DTM generation at plot