Vertical accuracy assessment of various open-source DEM data: DEMNAS, SRTM-1, and ASTER GDEM

    Danang Budi Susetyo Affiliation


DEM can be used optimally when it has good accuracy. Thus, assessing DEM data quality is mandatory before use it for specific thematic applications. Recently, there are open-source DEM data that can be downloaded and used freely by users, such as SRTM and ASTER GDEM. However, Indonesia tried to develop their own national seamless DEM, called DEMNAS. This study aims to evaluate the open-source DEMs that are popular in Indonesia: DEMNAS, SRTM-1, and ASTER GDEM. Accuracy assessment was conducted by comparing the DEMs to GPS measurements. The results showed that SRTM-1 had the best accuracy with 5.529 meters, followed by DEMNAS and ASTER GDEM with 8.172 meters and 13.632 meters, respectively. We also analyzed the linear relation between DEMs and GPS elevation data using the coefficient of determination, and all DEMs showed good R2 values. Lastly, the correlation between the error and the height of DEMs was also examined. The results were SRTM-1 had correlation between the height and accuracy, as well as ASTER GDEM. In contrast, the errors in DEMNAS were relatively uniform in all range of elevation.

Keyword : digital elevation model (DEM), DEMNAS, SRTM, ASTER GDEM, accuracy assessment

How to Cite
Susetyo, D. B. (2023). Vertical accuracy assessment of various open-source DEM data: DEMNAS, SRTM-1, and ASTER GDEM. Geodesy and Cartography, 49(4), 209–215.
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Dec 20, 2023
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This work is licensed under a Creative Commons Attribution 4.0 International License.


Abrams, M., Tsu, H., Hulley, G., Iwao, K., Pieri, D., Cudahy, T., & Kargel, J. (2015). The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) after fifteen years: Review of global products. International Journal of Applied Earth Observation and Geoinformation, 38, 292–301.

Alganci, U., Besol, B., & Sertel, E. (2018). Accuracy assessment of different digital surface models. ISPRS International Journal of Geo-Information, 7, 1–16.

ASTER, NASA, METI, ERSDAC, Caltech, & USGS. (2011). ASTER GDEM 2 readme.

Badan Standardisasi Nasional. (2019). SNI 8202:2019 Tentang Ketelitian Peta Dasar. In Standar Nasional Indonesia (pp. 1–29).

Cook, A. J., Murray, T., Luckman, A., Vaughan, D. G., & Barrand, N. E. (2012). A new 100-m Digital Elevation Model of the Antarctic Peninsula derived from ASTER Global DEM: Methods and accuracy assessment. Earth System Science Data, 4, 129–142.

Cowan, D., & Cooper, G. (2004). The Shuttle Radar Topography Mission–a new source of near-global digital elevation data. In ASEG 17th Geophysical Conference and Exhibition (pp. 1–4), Sydney.

Elkhrachy, I. (2018). Vertical accuracy assessment for SRTM and ASTER Digital Elevation Models: A case study of Najran city, Saudi Arabia. Ain Shams Engineering Journal, 9(4), 1807–1817.

Hell, B., & Jakobsson, M. (2011). Gridding heterogeneous bathymetric data sets with stacked continuous curvature splines in tension. Marine Geophysical Research, 32, 493–501.

Hirt, C., Filmer, M. S., & Featherstone, W. E. (2010). Comparison and validation of the recent freely available ASTER-GDEM ver1, SRTM ver4.1 and GEODATA DEM-9s ver3 digital elevation models over Australia. Australian Journal of Earth Sciences, 57, 337–347.

Ihsan, H. M., & Sahid. (2021). Vertikal accuracy assessment on Sentinel-1, ALOS PALSAR, and DEMNAS in the Ciater Basin. Jurnal Geografi Gea, 21(1), 16–25.

Julzarika, A. (2015). Height model integration using ALOS PALSAR, X SAR, SRTM C, and IceSAT/GLAS. International Journal of Remote Sensing and Earth Sciences, 12(2), 107–116.

Julzarika, A., & Harintaka. (2019). Indonesian DEMNAS: DSM or DTM? In 2nd IEEE Asia-Pacific Conference on Geoscience, Electronics and Remote Sensing Technology (AGERS) (pp. 31–36), Jakarta, Indonesia. IEEE.

Mukherjee, S., Joshi, P. K., Mukherjee, S., Ghosh, A., Garg, R. D., & Mukhopadhyay, A. (2013). Evaluation of vertical accuracy of open source Digital Elevation Model (DEM). International Journal of Applied Earth Observations and Geoinformation, 21, 205–217.

Patel, A., Katiyar, S. K., & Prasad, V. (2016). Performances evaluation of different open source DEM using Differential Global Positioning System (DGPS). The Egyptian Journal of Remote Sensing and Space Science, 19(1), 7–16.

Rabus, B., Eineder, M., Roth, A., & Bamler, R. (2003). The shuttle radar topography mission–a new class of digital elevation models acquired by spaceborne radar. ISPRS Journal of Photogrammetry and Remote Sensing, 57(4), 241–262.

Sulistiana, T., Parapat, A. D., & Aristomo, D. (2019). Analisis akurasi vertikal digital elevation model nasional (DEMNAS) studi kasus Kota Medan. In FIT ISI 2019 Dan Aseanflag 72nd Council Meeting (pp. 37–43), Jakarta.

Susetyo, D. B., Lumban-Gaol, Y. A., & Sofian, I. (2018). Prototype of national digital elevation model in Indonesia. ISPRS Technical Commission IV Symposium 2018 (pp. 609–613), Delft, The Netherlands.

Tachikawa, T., Hato, M., Kaku, M., & Iwasaki, A. (2011). Characteristics of ASTER GDEM version 2. In IEEE International Symposium on Geoscience and Remote Sensing (IGARSS) (pp. 3657–3660), Vancouver, BC, Canada.

Yue, L., Shen, H., Zhang, L., Zheng, X., Zhang, F., & Yuan, Q. (2017). High-quality seamless DEM generation blending SRTM-1, ASTER GDEM v2 and ICESat/GLAS observations. ISPRS Journal of Photogrammetry and Remote Sensing, 123, 20–34.