Comparison of Cartosat, ASTER and SRTM DEMs of different terrains
Comparison of Cartosat, ASTER and SRTM DEMs of different terrains
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不同地形的Cartosat、ASTER和SRTM DEM比较
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
G. Singh
中科院分区：
文献类型：
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作者：
Suman Sourav Baral;J. Das;A. Saraf;S. Borgohain;G. Singh
在过去的几年中，数字高程模型由于其在地形分析、地貌学等领域的多样化应用和实用性而变得更加迫切。由于其不可避免性，世界各地的不同组织（例如，DEM）正在生成具有合理精度和更高空间分辨率的 DEM。印度空间研究组织的Cartosat DEM（30m）、先进星载热发射和反射辐射计（ASTER）全球数字高程模型（30m）和SRTM（90m和30m）。在本研究中，根据地形崎岖程度选择了特定区域，即喜马拉雅干城章嘉峰地区（高度崎岖的地形）、北方邦的拉利特布尔地区（中等崎岖的地形）和北阿坎德邦的鲁尔基地区（几乎平坦的地形）。随后对印度三个地区的Cartosat-DEM (30m)、ASTER-GDEM (30m) 和SRTM DEM (30m) 进行了统计比较。三个区域的地形图也被用来将点高度与 Cartosat-DEM、ASTER-GDEM 和 SRTM-DEM 中的相应值进行比较。
In last few years, Digital Elevation Models have established much more imperative due to their diverse applications and utility in the fields of Terrain analyses, in geomorphology etc. Because of their inevitability, DEMs with reasonable accuracy and at higher spatial resolutions are being generated by different organizations worldwide, e.g. Cartosat DEM of Indian Space Research Organization (30m), Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (30m) and SRTM (90m and 30m). In the present study, specific areas have been selected based upon the terrain ruggedness i.e. Himalayan Kanchenjunga area (highly rugged terrain), Lalitpur area of Uttar Pradesh district (Moderately rugged terrain) and Roorkee area of Uttarakhand (almost flat terrain). Followed by a statistical comparison made between Cartosat-DEM (30m), ASTER-GDEM (30m) and SRTM DEM (30m) for the three regions of India. Topographic maps for the three regions have also been used to compare spots height with corresponding values in Cartosat-DEM, ASTER-GDEM and SRTM-DEM.