Recent Papers

The use of geoidal undulations from a geoid model is necessary to translate theoretical and geometric heights into actual heights. For the purpose of computing orthometric heights and comparing three geometric geoid surfaces with the Global Geoid Model (GGM). This paper established the geoid of Federal Polytechnic Ado Ekiti. Geoid has not been determined in the Federal Polytechnic and its environs. It is required to convert ellipsoidal heights to orthometric height. Users of height naturally prefer a precise orthometric height system. This paper established the geoid using Unistrong differential GPS in static mode and spirit level in closed loop for the observations, respectively, GPS and spirit levelling observations with application of orthometric corrections on the same thirty stationsEGM 2020 and 2021 data were downloaded. Geoidal undulation was computed using the processed data, and a geoidal map was created. The ellipsoidal heights, equivalent orthometric heights, and geoidal heights of the stations are the findings of this investigation. The descriptive statistics analysis describes geoid heights from three sources using the mean, median, skewness, kurtosis, standard deviation, variance. It was observed, that the results from EGM 2020 and 2021 have similar means at 95% confidence interval of 25.6147, 25.6214 and 25.5190 ,25.5250 at lower and upper bound respectively, while the Results from Geoidal Height has a mean of 20.2153 and 20.7991 at lower and upper bound. The skewness values point to the normality of the datasets, while kurtosis explains their peakedness. The standard deviations and variances describe the variations or dispersions in the data points. This research suggests using it to make important choices about the geophysical and infrastructure development of the region.Keywords: Height, Geoid, Orthometric, Ellipsoidal, Geoidal height

Copyright © 2023 OYINKOLADE SESAN PIUS. This is an open access article distributed under the Creative Commons Attribution License.