Jagiellonian University Repository
Assessment of the accuracy of SRTM C- and X-Band high mountain elevation data : a case study of the Polish Tatra Mountains
Communities & Collections
pcg.skipToMenu
Assessment of the accuracy of SRTM C- and X-Band high mountain elevation data : a case study of the Polish Tatra Mountains
Bibliographic description
| title: | Assessment of the accuracy of SRTM C- and X-Band high mountain elevation data : a case study of the Polish Tatra Mountains |
| author: | Kolecka Natalia  , Kozak Jacek
|
| journal title: | Pure and Applied Geophysics |
| volume: | 171 |
| issue: | 6 |
| date of publication : | 2014 |
| pages: | 897-912 |
| ISSN: |
0033-4553 |
| eISSN: |
1420-9136 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | Global digital elevation models (DEMs) are an invaluable source of information in large area studies. Of particular interest are shuttle radar topography mission (SRTM) data that are freely available for the scientific community worldwide. Prior to any application, global datasets should be evaluated using reference data of higher accuracy. Therefore, the main objective of this study was to assess the accuracy of the SRTM C-band (version 4) DEM and SRTM X-band DEM of mountainous areas located in Poland and to examine the quality of data in relation to topographic parameters, radar beam geometry, initial voids in data and the presence of forest cover. A DEM from the Central National Geodetic and Cartographic Inventory, Poland, served as a reference. The study consisted of three steps: (i) the computation of vertical errors of the SRTM C- and X-band DEMs, (ii) the examination of any systematic bias in the data, and (iii) the analysis of the relationships between the elevation errors and terrain slope, aspect, local incidence angle, occurrence of voids and land cover. We found that the SRTM C- and X-band DEMs have mean errors equal to 4.31 ± 14.09 and 9.03 ± 37.40 m and root mean square errors equal to 14.74 and 38.47 m, respectively. Only 82 \% of the C-band DEM and 74 \% of the X-band DEM vertical errors had absolute values below 16 m. We found that the most important factors determining the occurrence of high errors were the distribution of initial voids and high slope angles for the C-band DEM, and local incidence angle, slope, aspect and radar beam geometry for the X-band DEM. In both cases, the presence of forest cover increased the mean error by approximately 10 m. |
| keywords in English: | SRTM, accuracy assessment, digital elevation model, high mountain area |
| affiliation: | Wydział Biologii i Nauk o Ziemi : Instytut Geografii i Gospodarki Przestrzennej |
| type: | journal article |
| subtype: | academic paper |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||
This item appears in the following Collection(s)
Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
