Vertical accuracy assessment for SRTM and ASTER Digital Elevation Models in Khuzestan plain


Department of Remote Sensing and GIS, Shahid Chamran University of Ahvaz, Ahvaz, Iran


Assessment of data uncertainty increases our ability to study and accurate understanding of about real world, because awareness from uncertainty of resources and remove error for improving the obtained results is one of the most important items in the remote sensing science. Since the digital elevation model (DEM) extracted from different sensors and geometry, Therefore selection of the most suitable DEM that provide better ground conditions is the one of the main needs for experts in this field. The aim of this study to vertical accuracy assessment of the ASTER and SRTM digital elevation model compared to the elevation data from topographic maps that prepared by the Iran National Cartographic Center in the 12 city from Khuzestan province. In order to evaluation the accuracy of the data, the Mean Error (ME) index and Root Mean Square Error (RMSE) index are used. The result of evaluation ME index for the cities with topographic map for ASTER and SRTM data showed the value 6.08 and 2.34 meter, respectively. Also, the result of RMSE index for ASTER and SRTM data showed the value 6.94 and 3.46 meter, respectively. Therefore more, the result showed that in most cities of Khuzestan province the DEM derived from SRTM has a higher accuracy than the ASTER digital model; Since the SRTM data have a low uncertainty, Therefore in studies related to the extraction drainage network, drainage density, physiography of the watershed area, runoff or geology, it is suggested that SRTM elevation model be used.


Aghataher, R., Samadi, M., Laliniat, I., Najafi, I., 2016. Comparative Assessment of Vertical Accuracy of SRTM and ASTER GDEM Elevation Data. Journal of Geographical Data (SEPEHR) 99, 103-113.
Ashrafi, A., Mohammad Ali, A., 2014. The Comparison of Different Procedures for the Preparing of the Digital Elevation Model, Case Study: Noferest watershed, Birjand township, South Khorasan Province. Journal of Geography and Urban-Regional Planning 13, 119-140.
Azmudeh Ardalaan, A., 1992. Combination of GPS Information and High-Precision Levelling for the Study of Ground Subsidence. Journal of Geographical Data (SEPEHR) 4, 26-32.
behiari, M., Alizadeh, A., Mahmmodian, S., 2017. Assessment  the Impact of Active Structures on Land Subsidence Risk Using Multivariate Decision Models. Advanced Applied Geology 2, 49-56.
Congalton, R.G., Green, K. 2008. Assessing the accuracy of remotely sensed data: principles and practices, CRC press.
Du, X., Guo, H., Fan, X., Zhu, J., Yan, Z., Zhan, Q., 2012. Vertical accuracy assessment of SRTM and ASTER GDEM over coastal regions of China: A comparative analysis, Proceedings of the 33rd Asian Conference on Remote Sensing 26-30.
Elkhrachy, I., 2017. Vertical accuracy assessment for SRTM and ASTER Digital Elevation Models: A case study of Najran city, Saudi Arabia. Ain Shams Engineering Journal 9, 1807-1817.
Feizizadeh, B., Abdolah Abadei, S., Valizadeh Kamran, K., 2017. Modeling Uncertainty of Digital Elevation Models SRTM and ASTER and Their Impacts on Landform Classification in Garm-Chay Basin. Journal of Geographical Data (SEPEHR) 103, 29-41.
Feizizadeh, B., Blaschke, T., 2014. An uncertainty and sensitivity analysis approach for GIS-based multicriteria landslide susceptibility mapping. International Journal of Geographical Information Science 3, 610-638.
Fujisada, H., Urai, M., Iwasaki, A., 2011. Advanced methodology for ASTER DEM generation. IEEE Transactions on Geoscience and Remote Sensing 12, 5080-5091.
Gold, C., Zhu, Q., Li, Z., 2005. Digital Terrain modeling: Principles and methodology, CRC Press, Boca Raton.
Habashi, k., Karimzadeh, H., Pourmanafi, S., 2017. Assessment soil salinity in east Isfahan based on OLI sensor data and topographic feature analysis RS & GIS for Natural Resources 1, 36-51.
Heiskanen, W., Moritz, H., 1967. Physical Geodesy. WH Freeman and Company, San Francisco, CA.
Hirano, A., Welch, R., Lang, H., 2003. Mapping from ASTER stereo image data: DEM validation and accuracy assessment. ISPRS Journal of Photogrammetry and Remote Sensing 6, 356-370.
Jarvis, A., Rubiano, J.E., Nelson, A., Farrow, A., Mulligan, M., 2004. Practical use of SRTM data in the tropics: Comparisons with digital elevation models generated cartographic data.
Kamp, U., Bolch, T., Olsenholler, J., 2003. DEM Generation From ASTER Satllite Data For Geomorphometric Analysis of Cerro Sillajhuay, Chile/Bolivia, ASPRS 2003 Annual Conference Proceedings, Anchorage, Alaska.
Massonnet, D., Feigl, K.L., 1998. Radar interferometry and its application to changes in the Earth's surface. Reviews of Geophysics 4, 441-500.
Maune, D.F., 2007. Digital elevation model technologies and applications : the DEM users manual, Bethesda (Md.) by American Society for Photogrammetry and Remote Sensing.
Mohammadi, S., Karimzadeh, H., Habashi, K., 2018. Assessment Soil Erosion and Deposition in the Menderjan Watershed Using USPED and RUSLE Models in the Environment of Geographical Information System (GIS). Desert Ecosystem Engineering Journal 17, 43-56.
Nakhaei, M., Amiri, V., Rahimi Shahr Babaki, M., 2013. Groundwater Pollution Potential Analysis and Sensitivity Analysis in Khatun Abad Aquifer Using GIS-based Drastic Model. Advanced Applied Geology 2, 1-10.
Rahimpour, F., Abbaspour, R.A., 2014. Zoningthe SoilHeavy MetalsContamination using Kriging and RBF Methods Case study: Harris city. Journal of Geographical Data (SEPEHR) 91, 55-67.
Rodriguez, E., MORRIS, C.B., W., H., S. 2006. An assessment of the SRTM topographic products. Jet Propulsion Laboratory.
Rokni Deylami, B., Rezaeian Firoz Abadi, P., Farajzadeh, M., 2007. Accuracy assessment of digital elevation model preparation using ASTER images Geomatics Conference. Iranian Surveying Organization.
Rosen, P.A., Hensley, S., Joughin, I.R., Li, F.K., Madsen, S.N., Rodriguez, E., Goldstein, R.M., 2000. Synthetic aperture radar interferometry. Proceedings of the IEEE 3, 333-382.
Saberi, A., Rangzan, K., Mahjori, R., Keshavarzi, M., 2012. Potential of Groundwater Resource Integration by Remote Sensing and GIS Using Hierarchical Analysis (AHP) Method in the kamestan anticline Khuzestan Province. Advanced Applied Geology 4, 11-20.
Sefercik, U.G., 2012. Performance estimation of ASTER Global DEM depending upon the terrain inclination. Journal of the Indian Society of Remote Sensing 4, 565-576.
Shi, W., Liu, J., Du, Z., Song, Y., Chen, C., Yue, T., 2009. Surface modelling of soil pH. Geoderma 1. 113-119.
Statistical Yearbook of Khuzestan Province. 2017. Management and Planning Organization - Deputy of Statistics and Information,
Vadon, H., 2003. 3D Navigation over merged Panchromatic-Multispectral high resolution SPOT5 images. The international archives of the photogrammetry, remote sensing and spatial information sciences 5, W10.
Vanicek, M.P., Christou, N.T., 1993. Geoid and its geophysical interpretations, CRC Press.
Wright, G.B., 2003. Radial basis function interpolation: numerical and analytical developments, Ph.D. Thesis, University of Colorado, Boulder.
Yamaguchi, Y., Kahle, A.B., Tsu, H., Kawakami, T., Pniel, M., 1998. Overview of advanced spaceborne thermal emission and reflection radiometer (ASTER). IEEE Transactions on Geoscience and Remote Sensing 4, 1062-1071.