Accuracy Assessment of TanDEM-X 90 m Digital Elevation Model In East of Malaysia Using GNSS/Levelling
| Autor: | Ami Hassan Md Din, Rohayu Haron Narashid, Muhammad Faiz Pa'suya Green, Siti Mariam Abdul Halim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Synthetic aperture radar
010504 meteorology & atmospheric sciences Levelling 0211 other engineering and technologies 02 engineering and technology Shuttle Radar Topography Mission 01 natural sciences law.invention Advanced Spaceborne Thermal Emission and Reflection Radiometer GNSS applications law Orthometric height Radar Digital elevation model Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | 2019 IEEE 10th Control and System Graduate Research Colloquium (ICSGRC). |
| DOI: | 10.1109/icsgrc.2019.8837059 |
| Popis: | The main objective of this study is to assess the accuracy of various Global Digital Elevation Model (GDEM) from different open sources data. All the GDEMs were evaluated using GNSS Ground Control Point (GCP) and leveling height from mean sea level (H msl ) at 45 benchmarks around Sabah and Sarawak. The overall vertical accuracy shows the TerraSAR-X add-on for Digital Elevation Measurements (TanDEM-X 90m) DEM consistent well with the Mean Sea Level height with Root mean Square Error (RMSE) of Shutter Radar Topographic Mission (SRTM), TanDEM-X 90m, ALOS World 3D - 30m (AW3D30) and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is ±4.721m, ±3.140m, ±4.207 and ±9.412m, respectively. However, the vertical accuracy for AW3D30 is found better than TanDEM-X 90m with RMSE of ±3.831m, followed by TanDEM-X 90m DEM, SRTM and ASTER when the evaluation is made with orthometric height derived from GNSS GCPs. In overall, TanDEM-X and AW3D30 can be considered the best GDEM for scientific studies in East of Malaysia (Sabah and Sarawak). |
| Databáze: | OpenAIRE |
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