Accuracy Assessment of TanDEM-X DEM and Global Geopotential Models for Geoid Modeling in the Southern Region of Peninsular Malaysia Muhammad Faiz Pa’suya, Ami Hassan Md Din, Zulkarnaini Mat Amin, Noradila Rusli, Amir Hamzah Othman, Mohamad Azril Che Aziz and Mohd Adhar Abd Samad Abstract In modeling of geoid model, global digital elevation models (GDEMs) and global geopotential models (GGMs) involve in most part of the geoid com- putation process. Any errors in GDEMs and GGMs will introduce errors directly in geoid computation. Therefore, this study aims to evaluate the six recent GGMs and new digital elevation model from TanDEM-X, as well as the previously available GDEMs, SRTM GDEMs, over the southern region of Peninsular Malaysia. The evaluation of GDEMs has been performed with the use of high-precision Global Navigation Satellite System (GNSS) and EGM96 as vertical reference consisting of 277 stations. Meanwhile, the evaluation of GGMs is carried out using sixty-two (62) collocated GPS/leveling benchmarks (BMs). Based on the statistical analysis, it is shown that the improvement of DEM from TanDEM-X data is compared to the previously available DEMs, SRTM GDEMs. DEM from TanDEM-X of 30-m arc resolution is much better than TanDEM-X of 12-m arc resolution, as well as SRTM 30m and 90m. Comparison of GGMs with GNSS leveling shows that geoid height from GOCO05c fits well with the local geoid model. Keywords Geoid Á GDEMs Á SRTM Á TanDEM-X Á GGMs M. F. Pa’suya (&) Á N. Rusli Á M. A. C. Aziz Á M. A. A. Samad Green Environment and Technology (GREENTech) Research Group, Centre of Study for Surveying Science and Geomatics, Faculty of Architecture Planning and Surveying, Universiti Teknologi MARA, Perlis Branch Arau Campus, 02600 Arau, Perlis, Malaysia e-mail: faiz524@perlis.uitm.edu.my A. H. Md Din Á Z. M. Amin Á A. H. Othman Faculty of Geoinformation and Real Estate, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia © Springer Nature Singapore Pte Ltd. 2018 R. Saian and M. A. Abbas (eds.), Proceedings of the Second International Conference on the Future of ASEAN (ICoFA) 2017 – Volume 2, https://doi.org/10.1007/978-981-10-8471-3_9 91