Non-Destructive Survey of Archaeological Sites Using Airborne Laser Scanning and Geophysical Applications

Abstract

Geographical information system (GIS), Georeferencing ABSTRACT:This paper deals with the non-destructive documentation of the "Radkov" (Svitavy district, Czech Republic) archaeological site. ALS, GPR and land survey mapping will be used for the analysis. The fortified hilltop settlement "Radkov" is an immovable historical monument with preserved relics of anthropogenic origin in relief. Terrain reconnaissance can identify several accentuated objects on site. ALS enables identification of poorly recognizable archaeological objects and their contexture in the field. Geophysical survey enables defunct objects identification. These objects are hidden below the current ground surface and their layout is crucial. Land survey mapping provides technical support for ALS and GPR survey. It enables data georeferencing in geodetic reference systems. GIS can then be used for data analysis. M. Cejpová and J. Němcová have studied this site over a long period of time. In 2012 Radkov was surveyed using ALS in the project "The Research of Ancient Road in Southwest Moravia and East Bohemia". Since 2015 the authors have been examining this site. This paper summarises the existing results of the work of these authors. The digital elevation model in the form of a grid (GDEM) with a resolution 1 m of 2012 was the basis for this work. In 2015 the survey net, terrain reconnaissance and GPR survey of two archaeological objects were done at the site. GDEM was compared with these datasets. All datasets were processed individually and its results were compared in ArcGIS.

Verification and Updating of the Database of Topographic Objects with Geometric Information About Buildings by Means of Airborne Laser Scanning Data

“…These parameters together with the RMSE error are mostly used for accuracy assessment of the achieved outcomes (Poloprutský et al, 2016;Grigillo & Kanjiir, 2012):…”

“…Within the last several years there can be observed the growing awareness of using airborne laser scanning technology (ALS) for automatic identification of several different land cover elements, such as archeological objects (Poloprutský et al, 2016), landslides (Pawłuszek & Borkowski, 2016), trees (Hauglin & Naesset, 2016), roads (Zhao et al, 2011) and also buildings (Wei, 2014;Matikainen et al, 2010). Modelling of space's geometric elements using ALS data has become a reality.…”