Use of LIDAR ISOK data Available With the Use of Geoportal 2 Website for Discovering Archaeological Sites (original) (raw)

Pilszyk J., Szmyd P. 2017. Use of LIDAR ISOK data Available With the Use of Geoportal 2 Website for Discovering Archaeological Sites. Analecta Archaeologica Ressoviensia 12, 169–176 The aim of the following study is to present archaeological sites, the discovery of which was possible due to the use of spatial data obtained within the framework of the ISOK project and shared in the service of viewing shaded relief terrain for NMT with a resolution of 1m using Geoportal 2. LiDAR (laser scanning), an acronym from the words Light Detection and Ranging, also known as ALS (Air Laser Scanning), is a topographic research technique that uses an optical laser to scan the earth's surface in 3D (Davis 2012, 4). The pulse is emitted from a scanning device placed under the plane. The result of ALS scanning is a cloud consisting of several thousand to millions of points, which are then processed in the Geographic Information System (GIS) software to generate digital terrain (DEM – acronym Digital Elevation Model). LIDAR is now becoming the primary source of geographic data. This technology collects very accurate geographic data. They are used by scientists representing various fields of science. Data of this type perfectly reflect the shape of the land surface, revealing sites with their own landscape form. Thanks to LIDAR data created within the framework of the ISOK project, we are able to receive accurate imaging of the earth with outlined structures such as earth ramparts, moats, remains of trenches or burial mounds. The obtained imaging has an accuracy of 15 to 30 cm. ALS has become a very popular method in searching for relics of the past. While analyzing images, it is possible to notice the earth structures