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M. Doneus, C. Briese, A. Klimczyk, G. Verhoeven:
"Towards an advanced DTM generation in wooded areas for archaeological prospection";
Talk: Ambitions and Realities. Remote Sensing for Archaeology, Research and Conservation (AARG 2011)., Institute of Prehistory, Adam Mickiewicz University, Poznan, Poland; 2011-09-21 - 2011-09-24.

Airborne Laser scanning (ALS, also referred to as airborne LiDAR) is a widely used data acquisition method for topographic modelling. Especially full-waveform (FWF) ALS systems show considerable advantages for the generation of digital terrain models (DTM) in vegetated areas, as the FWF-parameters might improve classification of ALS data into terrain and off-terrain points, resulting in greater DTM quality and higher potential for the subsequent archaeological interpretation. FWF-ALS displays a high potential, but is still in its infancy (in contrast to conventional ALS sensors FWF-ALS is just available since a few years). One key topic to be investigated is the complex interaction of the laser beam with different types of vegetation cover. An in-depth understanding is essential to enhance the quality of the DTM and to allow a reliable interpretation of the acquired data. Therefore, part of a forest was simultaneously scanned by airborne and terrestrial (TLS) laser scanning (Riegl LMS-Q680 and Riegl VZ-400). Based on the TLS dataset, the position of the derived ALS echoes is studied and the additionally derived FWF-parameters are investigated. This analysis allows estimating the potential for methods for advanced DTM generation which should allow an advanced interpretation of archaeological structures which are present on the terrain surface.