Comparative Study of Cartosat-DEM and SRTM-DEM on Elevation Data and Terrain Elements
| Dublin Core | PKP Metadata Items | Metadata for this Document | |
| 1. | Title | Title of document | Comparative Study of Cartosat-DEM and SRTM-DEM on Elevation Data and Terrain Elements |
| 2. | Creator | Author's name, affiliation, country | Gajalakshmi K.; Department of Civil Engineering, R.V. College of Engineering, Bangalore, Affiliated to VTU, Belgaum, Karnataka, India |
| 2. | Creator | Author's name, affiliation, country | Anantharama V.; Department of Civil Engineering, R.V. College of Engineering, Bangalore, Affiliated to VTU, Belgaum, Karnataka, India |
| 3. | Subject | Discipline(s) | remote sensing |
| 3. | Subject | Keyword(s) | Cartosat-DEM; SRTM-DEM; Accuracy; Elevation; Terrain Derivatives |
| 3. | Subject | Subject classification | digital elevation model |
| 4. | Description | Abstract |
The three dimensional space is represented by Digital Elevation Models (DEMs) in a discrete form. DEM plays an important role in characterizing the topography and to derive the watershed boundaries thereby to study the landscape with in the watershed. Over a decade, DEMs from satellite imageries like ASTER, SRTM, IKONOS, Cartosat etc. are becoming popular with wide applications. However, issue of accuracy of DEMs generated from the satellite imageries is the major concern of remote sensing researcher’s. The main purpose of this study is to compare the accuracy of DEM generated from two different satellite sources, 1) Optical based sensory satellite data – Cartosat-DEM. 2) Microwave based sensory satellite data – SRTM-DEM. The study was conducted over Southpennar watershed which has gradually undulating topography. The comparative study was done under two categories; they are through elevation data and terrain derivatives. The study reveals that in gradually undulating terrain, elevation values of Cartosat-DEM are lower than SRTM-DEM. whereas the stream parameter values of Cartosat-DEM are higher than SRTM-DEM. In visual analysis the contours obtained from Cartosat-DEM and SRTM-DEM aligns with each other irrespective of the resolution. |
| 5. | Publisher | Organizing agency, location | |
| 6. | Contributor | Sponsor(s) | |
| 7. | Date | (YYYY-MM-DD) | 2015-11-03 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | http://technical.cloud-journals.com/index.php/IJARSG/article/view/Tech-480 |
| 11. | Source | Journal/conference title; vol., no. (year) | International Journal of Advanced Remote Sensing and GIS; Volume 4 (Year 2015) |
| 12. | Language | English=en | en |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
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