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Regional Models

Peninsular Malaysia (PMGG2020)

  Authors: M.F. Pa’suya, et al.     Created: 2020    Resp: M.F. Pa’suya  
      Status: PRIVATE 
A new gravimetric geoid model for Peninsular Malaysia (PMGG2020) based on the Royal Institute of Technology (KTH) method was computed from 8474 terrestrial gravity points, satellite altimetry-derived gravity anomaly (DTU17), 24,855 airborne gravity data, and the TanDEM-X Digital Elevation Model. All the gravity datasets were combined and gridded onto a 1-min resolution using the 3D Least Square Collocation (LSC) method with EIGEN-6C4 as the reference field. GO_CONS_GCF_2_SPW_R4 was used to provide long wavelengths of gravity field up to 130 maximum degrees and order in the geoid computation. Based on an evaluation using 173 Global Navigation Satellite System (GNSS)-levelling points distributed over Peninsular Malaysia, the precision of the PMGG2020 was 0.058 m. It is almost identical to the accuracy of the official Peninsular Malaysia gravimetric geoid, WMG03A.

M.F. Pa’suya, A.H. Md Din, R.A. Abbak, M.H. Hamden, N.M. Yazid, M.A. Che Aziz, M.A. Abd Samad (2022). Hybrid geoid model over peninsular Malaysia (PMHG2020) using two approaches. Studia Geophysica Geodaetica 66, pp. 98-123. DOI: 10.1007/s11200-021-0769-2.