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Year 2022, Volume: 9 Issue: 1, 52 - 59, 06.03.2022

Herbert Tata Okıemute Eteje

https://doi.org/10.30897/ijegeo.899062

Abstract

References

  • Aleem K. F., (2014). Adaptation of a Global Orthometric Height Model to Local Height Datum Using Satlevel' Collocation. Unpublished PhD Dissertation of the Department of Surveying and Geoinformatics, University of Lagos, Nigeria.
  • Bernhard H. W., and Mortiz H., (2005). Physical Geodesy. Springer Verlag., New York.
  • Eteje S. O., and Oduyebo O. F., (2018). Local Geometric Geoid Models Parameters and Accuracy Determination Using Least Squares Technique. International Journal of Innovative Research and Development, 7(7), 251-257 DOI: http://dx.doi.org/10.24940/ijird/2018/v7/i7/JUL18098.
  • Eteje S. O., Oduyebo O. F., and Oluyori P. D., (2019). Modelling Local Gravity Anomalies from Processed Observed Gravity Measurements for Geodetic Applications. International Journal of Scientific Research in Science and Technology, 6(5), 144-162. DOI: https://doi.org/10.32628/IJSRST196515.
  • Eteje S. O., Ono M. N. and Oduyebo O. F., (2018). Practical Local Geoid Model Determination for Mean Sea Level Heights of Surveys and Stable Building Projects. IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT). 12(6) 30-37. DOI: http://dx.doi.org/10.9790/2402-1206013037.
  • Engelis T. R., Rapp H. and Tscherning C. C. (1984). The precise computation of geoid undulation differences with comparison to result obtained from the Global Positioning System”Geophys. Res.Letters. 11(9): 821-824
  • Featherstone, W. E. (2004). Evidence of a North-South Trend between AUSGeoid98 and the Australian Height Datum in Southwest Australia. Survey Review, 37(291) 334-343. http://www.cage.curtin.edu.au/~geogrp/research.html.
  • Featherstone W. E., Dentith M. C., and Kirby J. F., (1998). Strategies for the Accurate Determination of Orthometric Heights from GPS. Survey Review, 34(267), 278-296
  • Fotopoulos G., (2003). An Analysis on the Optimal Combination of Geoid, Orthometric and Ellipsoidal Height Data. University of Calgary, Department of Geomatics Engineering.
  • Fubara D. M. J., (2007). The Relevance of Gravity Measurements in Geodesy and Geodynamics. Lead Paper Presented at the Workshop on the Relevance of Gravity Measurements in Geodesy and Geodynamics Organized by Centre for Geodesy and Geodynamics, National Space Research and Development Agency, Toro, Bauchi State
  • Heiskanen W., and Moritz H., (1967). Physical Geodesy. London: W. H. Freeman and Company.
  • Herbert and Olatunji (2021). Determination of Orthometric Height Using GNSS and EGM Data: A Scenario of The Federal University of Technology Akure. International Journal of Environment and Geoinformatics (IJEGEO), 8(1):100-105. doi: 10.30897/ ijegeo.754808
  • Moka E. C., (2011). Requirement for the Determination of Orthometric Heights from GPS – Determined Heights. Contemporary Issues in Surveying and Geoinformatics.
  • Odumosu J. O., Ajayi O. G., Idowu, F. F. and Adesina E. A., (2018). Evaluation of the Various Orthometric Height Systems and the Nigerian Scenario – A Case Study of Lagos State. Journal of King Saud University – Engineering Sciences, 30, 46–53.
  • Oduyebo O. F., Ono M. N. and Eteje S. O., (2019). Practical Local Geoid Modelling of Benin City, Nigeria from Gravimetric Observations Using the Modified Stokes Integral. International Journal of Advanced Engineering, Management and Science (IJAEMS), 5(12), 608-617. DOI: https://dx.doi.org/10.22161/ijaems.512.1.
  • Opaluwa Y. D., and Adejare Q. A., 2011: Derivation of Orthometric Heights from GPS Measured Heights Using Geometrical Technique and EGM 96 Model. FUTY Journal of the Environment, 5(1). DOI: http://dx.doi.org/10.4314/fje.v5i1.63477.
  • Peprah M. S., and Kumi S. A., 2017: Appraisal of Methods for Estimating Orthometric Heights. Journal of Geosciences and Geomatics, 5(3), 96-108. DOI: 10.12691. Sideris M. G., Mainville A., and Forsberg, R., 1992: Geoid Testing Using GPS and Leveling (or GPS Testing Using Leveling and the Geoid?). Aust. J. Geod. Photogram. Surv, 57, 62-77.
  • Tata H., and Ono M. N., (2018). A Geometric Approach for Determination of Geoidal Height in Akure Environs, Ondo State, Nigeria. International Journal of Scientific and Research Publications, 8(8), 668-677. DOI: http://dx.doi.org/10.29322/IJSRP.8.8.2018.p8084.
  • Tata H., and Ono M. N., (2018). A Gravimetric Approach for the Determination of Orthometric heights in Akure Environs, Ondo State, Nigeria. Journal of Environment and Earth Science, 8(8), 75-80.

Determination of Orthometric Heights of Points Using Gravimetric/GPS and Geodetic Levelling Approaches

Year 2022, Volume: 9 Issue: 1, 52 - 59, 06.03.2022

Herbert Tata Okıemute Eteje

https://doi.org/10.30897/ijegeo.899062

Abstract

The importance of practical, as well as orthometric heights in engineering cannot be underestimated as it is required for the determination of proposed construction levels and to direct the flow of water. This study presents the determination of orthometric heights of points using gravimetric/GPS and geodetic levelling approaches and compares the resolution of the two approaches to determine which of the methods is better for orthometric height determination in the study area. A total of 59 stations were occupy for gravity observation using Lacoste and Romberg (G-512 series) gravimeter to obtain the absolute gravity values of the points. GNSS observation was carried out in static mode using South GNSS receivers to obtain the positions and ellipsoidal heights of the points. The modified Stokes’ integral was applied to obtain the geoid heights of the points. Similarly, levelling was carried out using the geodetic level to obtain the level heights of the points. The orthometric correction was applied to the geodetic levelling results to obtain precise level heights of the points. The RMSE index was applied to compute the accuracy of the geoid models. The computed result shows that orthometric heights can be obtained in the study area using the two models with an accuracy of 0.3536m. Z-test was carried out to determine if there is any significant difference between the two methods. The test results show that statistically, there is no significant difference between the two methods. Hence, the two methods can be applied for orthometric heights determination in the study area.

Keywords

Orthometric heights Gravimetric GPS Geodetic Levelling

References

  • Aleem K. F., (2014). Adaptation of a Global Orthometric Height Model to Local Height Datum Using Satlevel' Collocation. Unpublished PhD Dissertation of the Department of Surveying and Geoinformatics, University of Lagos, Nigeria.
  • Bernhard H. W., and Mortiz H., (2005). Physical Geodesy. Springer Verlag., New York.
  • Eteje S. O., and Oduyebo O. F., (2018). Local Geometric Geoid Models Parameters and Accuracy Determination Using Least Squares Technique. International Journal of Innovative Research and Development, 7(7), 251-257 DOI: http://dx.doi.org/10.24940/ijird/2018/v7/i7/JUL18098.
  • Eteje S. O., Oduyebo O. F., and Oluyori P. D., (2019). Modelling Local Gravity Anomalies from Processed Observed Gravity Measurements for Geodetic Applications. International Journal of Scientific Research in Science and Technology, 6(5), 144-162. DOI: https://doi.org/10.32628/IJSRST196515.
  • Eteje S. O., Ono M. N. and Oduyebo O. F., (2018). Practical Local Geoid Model Determination for Mean Sea Level Heights of Surveys and Stable Building Projects. IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT). 12(6) 30-37. DOI: http://dx.doi.org/10.9790/2402-1206013037.
  • Engelis T. R., Rapp H. and Tscherning C. C. (1984). The precise computation of geoid undulation differences with comparison to result obtained from the Global Positioning System”Geophys. Res.Letters. 11(9): 821-824
  • Featherstone, W. E. (2004). Evidence of a North-South Trend between AUSGeoid98 and the Australian Height Datum in Southwest Australia. Survey Review, 37(291) 334-343. http://www.cage.curtin.edu.au/~geogrp/research.html.
  • Featherstone W. E., Dentith M. C., and Kirby J. F., (1998). Strategies for the Accurate Determination of Orthometric Heights from GPS. Survey Review, 34(267), 278-296
  • Fotopoulos G., (2003). An Analysis on the Optimal Combination of Geoid, Orthometric and Ellipsoidal Height Data. University of Calgary, Department of Geomatics Engineering.
  • Fubara D. M. J., (2007). The Relevance of Gravity Measurements in Geodesy and Geodynamics. Lead Paper Presented at the Workshop on the Relevance of Gravity Measurements in Geodesy and Geodynamics Organized by Centre for Geodesy and Geodynamics, National Space Research and Development Agency, Toro, Bauchi State
  • Heiskanen W., and Moritz H., (1967). Physical Geodesy. London: W. H. Freeman and Company.
  • Herbert and Olatunji (2021). Determination of Orthometric Height Using GNSS and EGM Data: A Scenario of The Federal University of Technology Akure. International Journal of Environment and Geoinformatics (IJEGEO), 8(1):100-105. doi: 10.30897/ ijegeo.754808
  • Moka E. C., (2011). Requirement for the Determination of Orthometric Heights from GPS – Determined Heights. Contemporary Issues in Surveying and Geoinformatics.
  • Odumosu J. O., Ajayi O. G., Idowu, F. F. and Adesina E. A., (2018). Evaluation of the Various Orthometric Height Systems and the Nigerian Scenario – A Case Study of Lagos State. Journal of King Saud University – Engineering Sciences, 30, 46–53.
  • Oduyebo O. F., Ono M. N. and Eteje S. O., (2019). Practical Local Geoid Modelling of Benin City, Nigeria from Gravimetric Observations Using the Modified Stokes Integral. International Journal of Advanced Engineering, Management and Science (IJAEMS), 5(12), 608-617. DOI: https://dx.doi.org/10.22161/ijaems.512.1.
  • Opaluwa Y. D., and Adejare Q. A., 2011: Derivation of Orthometric Heights from GPS Measured Heights Using Geometrical Technique and EGM 96 Model. FUTY Journal of the Environment, 5(1). DOI: http://dx.doi.org/10.4314/fje.v5i1.63477.
  • Peprah M. S., and Kumi S. A., 2017: Appraisal of Methods for Estimating Orthometric Heights. Journal of Geosciences and Geomatics, 5(3), 96-108. DOI: 10.12691. Sideris M. G., Mainville A., and Forsberg, R., 1992: Geoid Testing Using GPS and Leveling (or GPS Testing Using Leveling and the Geoid?). Aust. J. Geod. Photogram. Surv, 57, 62-77.
  • Tata H., and Ono M. N., (2018). A Geometric Approach for Determination of Geoidal Height in Akure Environs, Ondo State, Nigeria. International Journal of Scientific and Research Publications, 8(8), 668-677. DOI: http://dx.doi.org/10.29322/IJSRP.8.8.2018.p8084.
  • Tata H., and Ono M. N., (2018). A Gravimetric Approach for the Determination of Orthometric heights in Akure Environs, Ondo State, Nigeria. Journal of Environment and Earth Science, 8(8), 75-80.
There are 19 citations in total.

Details

Primary Language English
Subjects Environmental Sciences
Journal Section Review Articles
Authors

Herbert Tata 0000-0002-9755-1612

Okıemute Eteje This is me 0000-0002-0578-2799

Publication Date March 6, 2022
Published in Issue Year 2022 Volume: 9 Issue: 1

Cite

APA Tata, H., & Eteje, O. (2022). Determination of Orthometric Heights of Points Using Gravimetric/GPS and Geodetic Levelling Approaches. International Journal of Environment and Geoinformatics, 9(1), 52-59. https://doi.org/10.30897/ijegeo.899062

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