Abstract
Digital elevation models (DEM) are an essential data source in many professional disciplines, with the help of gridded height information and values such as slope and aspect produced from that information. In this study, Ice, Cloud and land Elevation Satellite-2 (ICESat-2) and Global Ecosystem Dynamics Investigation (GEDI) satellite-altimetry data, and SRTM, ASTER-GDEM, and ALOS World3D data were used as Global DEMs (GDEMs) data in three different areas (U.S.A., New Zealand and Puerto Rico). We used kriging methods for interpolation to create the new rasters. Point-based accuracies were compared with the GDEMs from satellite-altimetry systems and raster-based comparisons were made by deriving DEMs with satellite-altimetry data in three different areas. It was seen that the ICESat-2 data in point-based results had similar accuracy with other GDEMs. DEMs produced by using ICESat-2 and GEDI data together gave relatively better results than using alone. In particular, the correlation was found to be highly correlated with 99%.
Original language | English |
---|---|
Pages (from-to) | 2693-2707 |
Number of pages | 15 |
Journal | Earth Science Informatics |
Volume | 16 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2023 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- GEDI
- Global Digital Elevation Models (GDEMs)
- ICESat-2
- Satellite-Based LiDAR