Abstract
Abstract. Digital elevation model, showing the physical and topographical situation of the earth, is defined a tree-dimensional digital model obtained from the elevation of the surface by using of selected an appropriate interpolation method. DEMs are used in many areas such as management of natural resources, engineering and infrastructure projects, disaster and risk analysis, archaeology, security, aviation, forestry, energy, topographic mapping, landslide and flood analysis, Geographic Information Systems (GIS). Digital elevation models, which are the fundamental components of cartography, is calculated by many methods. Digital elevation models can be obtained terrestrial methods or data obtained by digitization of maps by processing the digital platform in general. Today, Digital elevation model data is generated by the processing of stereo optical satellite images, radar images (radargrammetry, interferometry) and lidar data using remote sensing and photogrammetric techniques with the help of improving technology. One of the fundamental components of remote sensing radar technology is very advanced nowadays. In response to this progress it began to be used more frequently in various fields. Determining the shape of topography and creating digital elevation model comes the beginning topics of these areas. It is aimed in this work , the differences of evaluation of quality between Sentinel-1A SAR image ,which is sent by European Space Agency ESA and Interferometry Wide Swath imaging mode and C band type , and DTED-2 (Digital Terrain Elevation Data) and application between them. The application includes RMS static method for detecting precision of data. Results show us to variance of points make a high decrease from mountain area to plane area.
Highlights
Learning about our planet in every aspect is very important for human life
To determine on deformation of megacity there is a work about DInsar for monitoring deformation. (Calò, 2015) digital elevation model (DEM) obtained from InSAR technic is evaluated and analysed. (Sefercik, 2007) And DEM was researched by almost all different areas like mountainous or plane.(Liao,2007) In addition to all, different works were done by several researchers in this topic and close to this topic
Statical results show us if you want to create a DEM from Sentinel-1A SAR images, you could do better DEM for low slope terrains and density of gradient effect your DEM’s elevation precision directly
Summary
Learning about our planet in every aspect is very important for human life. In these days, some different developments make our ideas smaller. Digital Elevation Models that are used for visualising the earth are growing with update technology. Radar technology and connected technologies like SAR, inSAR, DInsar etc. (Sefercik, 2007) And DEM was researched by almost all different areas like mountainous or plane.(Liao,2007) In addition to all, different works were done by several researchers in this topic and close to this topic. Doris and StamPS are useful open sources software that was researched about evaluating DEM using SAR data. Doris is useful for this process and results were logical for future works. Doris is useful for this process and results were logical for future works. (Geymen, 2014)
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