|Title:||Accuracy of cartosat-1 DEM and its derived attribute at multiple scale representation|
Garg, Rahul D.
|Published in:||Journal of Earth System Science|
|Abstract:||Digital Elevation Model (DEM) provides basic information about terrain relief and is used for morphological characterisation, hydrological modelling and infrastructural studies. This paper investigates the accuracy of DEM and its derived attributes in multiple scales. This study was carried out for a part of Shiwalik Himalaya using Cartosat-1 stereo pair data. DEM at various cell sizes were generated and information content was compared using mean elevation, variance and entropy statistics. Various post-spacing DEMs were validated to understand variation in vertical accuracy along different scales. The vertical accuracy (3.14-7.24 m) is affected in larger spacing DEM and elevation is underestimated. Slope of terrain also has similar impacts. The DEM and slope accuracy are also affected by the terrain roughness while assessing coarser grid size. © Indian Academy of Sciences.|
|Citation:||Journal of Earth System Science, 124(3): 487-495|
|Publisher:||Indian Academy of Sciences|
|Author Scopus IDs:||57198769167|
|Author Affiliations:||Mukherjee, S., Indian Institute of Remote Sensing, Indian Space Research Organisation, Dehradun, 248 001, India|
Mukherjee, S., Department of Natural Resources, TERI University, New Delhi, 110 070, India
Bhardwaj, A., Indian Institute of Remote Sensing, Indian Space Research Organisation, Dehradun, 248 001, India
Mukhopadhyay, A., School of Oceanographic Studies, Jadavpur University, Kolkata, India
Garg, R.D., Department of Civil Engineering, Indian Institute of Technology, Roorkee, 247 667, India
Hazra, S., School of Oceanographic Studies, Jadavpur University, Kolkata, India
|Corresponding Author:||Mukherjee, S.; Department of Natural Resources, India|
|Appears in Collections:||Journal Publications [CE]|
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