Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India
© 2020, Indian Society of Remote Sensing. India presents among the world’s most topographically complex geomorphologies, with land elevations ranging from –2 m to + 8586 m and terrain gradients sometimes exceeding 45°. Here, we present an evaluation of four freely available digital surface models (D...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Language: | English |
| Published: |
SPRINGER
2020
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/82549 |
| _version_ | 1848764518442729472 |
|---|---|
| author | Goyal, Ropesh Featherstone, Will Dikshit, O. Balasubramania, N. |
| author_facet | Goyal, Ropesh Featherstone, Will Dikshit, O. Balasubramania, N. |
| author_sort | Goyal, Ropesh |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2020, Indian Society of Remote Sensing. India presents among the world’s most topographically complex geomorphologies, with land elevations ranging from –2 m to + 8586 m and terrain gradients sometimes exceeding 45°. Here, we present an evaluation of four freely available digital surface models (DSMs) on a model-to-model basis, as well as a validation using independent ground-truth data from levelled benchmarks in India. The DSMs tested comprise SRTM1″, SRTM3″, ASTER1″ and Cartodem1″ [an India-only model]. Along with these four DSMs, the MERIT3″ digital elevation model (DEM) is also tested with the ground-truth data. Our results for India indicate some mismatch of these DEMs/DSMs from their claimed accuracies/precisions. All DSMs/DEMs (except for ASTER) have > 90% of pixels satisfying ± 16 m at the one-sigma level, but only in the low-lying (< 500 m) parts of India, i.e. the Gangetic plains and the Thar desert. |
| first_indexed | 2025-11-14T11:20:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-82549 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:20:38Z |
| publishDate | 2020 |
| publisher | SPRINGER |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-825492024-05-21T03:39:29Z Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India Goyal, Ropesh Featherstone, Will Dikshit, O. Balasubramania, N. Science & Technology Life Sciences & Biomedicine Technology Environmental Sciences Remote Sensing Environmental Sciences & Ecology Vertical accuracy precision assessment Digital surface models Digital elevation models India ELEVATION MODELS ASTER GDEM2 SRTM DEM EXTERNAL VALIDATION EXTRACTION GRAVITY TERRAIN EXAMPLE REGION SITES © 2020, Indian Society of Remote Sensing. India presents among the world’s most topographically complex geomorphologies, with land elevations ranging from –2 m to + 8586 m and terrain gradients sometimes exceeding 45°. Here, we present an evaluation of four freely available digital surface models (DSMs) on a model-to-model basis, as well as a validation using independent ground-truth data from levelled benchmarks in India. The DSMs tested comprise SRTM1″, SRTM3″, ASTER1″ and Cartodem1″ [an India-only model]. Along with these four DSMs, the MERIT3″ digital elevation model (DEM) is also tested with the ground-truth data. Our results for India indicate some mismatch of these DEMs/DSMs from their claimed accuracies/precisions. All DSMs/DEMs (except for ASTER) have > 90% of pixels satisfying ± 16 m at the one-sigma level, but only in the low-lying (< 500 m) parts of India, i.e. the Gangetic plains and the Thar desert. 2020 Journal Article http://hdl.handle.net/20.500.11937/82549 10.1007/s12524-020-01273-7 English SPRINGER fulltext |
| spellingShingle | Science & Technology Life Sciences & Biomedicine Technology Environmental Sciences Remote Sensing Environmental Sciences & Ecology Vertical accuracy precision assessment Digital surface models Digital elevation models India ELEVATION MODELS ASTER GDEM2 SRTM DEM EXTERNAL VALIDATION EXTRACTION GRAVITY TERRAIN EXAMPLE REGION SITES Goyal, Ropesh Featherstone, Will Dikshit, O. Balasubramania, N. Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title | Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title_full | Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title_fullStr | Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title_full_unstemmed | Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title_short | Comparison and Validation of Satellite-Derived Digital Surface/Elevation Models over India |
| title_sort | comparison and validation of satellite-derived digital surface/elevation models over india |
| topic | Science & Technology Life Sciences & Biomedicine Technology Environmental Sciences Remote Sensing Environmental Sciences & Ecology Vertical accuracy precision assessment Digital surface models Digital elevation models India ELEVATION MODELS ASTER GDEM2 SRTM DEM EXTERNAL VALIDATION EXTRACTION GRAVITY TERRAIN EXAMPLE REGION SITES |
| url | http://hdl.handle.net/20.500.11937/82549 |