Open AccessQUALITY ANALYSIS OF GPS DATA PROCESSED BY EARTH GRAVITATIONAL MODEL (EGM2008) OF HILLA AREA, IRAQ
Author(s) -
Hussein H. Karim,
Asst. Prof. Dr. Imzahim A. Alwan,
Basheer S. Jasim
Publication year - 2016
Publication title -
zenodo (cern european organization for nuclear research)
Language(s) - English
DOI - 10.5281/zenodo.154542
Subject(s) - global positioning system , geodesy , remote sensing , environmental science , geology , computer science , telecommunications
The main objective of this study is to examine the concept and techniques of involving geoid in GPS height observation to be detected as a leveling tool. The paper extends to the relationship between the obtained heights and the use of the modern global geoid model EGM2008 available for the study area (Hilla, central Iraq). The present analysis was carried 22 points observed by GPS and level devices available in the study area. Evaluation by comparisons of geoid heights computed from the model with those available GPS leveling stations of the study area were determined. Then, the standard deviations are calculated as an indicator for the accuracy of the US website OPUS for the study area. Most accurate results of GPS data are obtained using the static method in geodetic works after being processed through the US website OPUS. The results accuracy of the data observed by GPS after processing by EGM2008 model is within the range ± 0.041 m. Finally, as an evaluation, it can be stated from results of the computed geoid accuracy is acceptable and the present geoid model EGM2008 is considered as the optimal geoid so far for the study area