Some remarks about orthometric and normal height systems

Popadyev, V.V.; Rakhmonov, S.S.

doi:10.5194/egusphere-egu22-10246

Cited by 2 publications

(1 citation statement)

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“…Taking into account the fact that even in the specialized literature there are different indications of the method of calculating the normal height: along the normal to the reference ellipsoid (see Fig. 1), along the coordinate line of the spheroidal system, or along the force line of the normal gravity field (the most related to the orthometric system) , the advantages of calculating the normal height as the length of the coordinate line of the spheroidal coordinate system are indicated [Popadyev, Rakhmonov, 2022],…”

Section: Physical Geodesymentioning

confidence: 99%

National Report for the IAG of the IUGG 2019–2022

2023

Geoinformatics Research Papers

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Major results of researches conducted by Russian geodesists in 2019-2022 on the topics of the International Association of Geodesy (IAG) of the International Union of Geodesy and Geophysics (IUGG) are presented in this issue. This report is prepared by the Section of Geodesy of the National Geophysical Committee of Russia. In the report prepared for the XXVII General Assembly of IUGG (Germany, Berlin, 11-20 July 2023), the results of principal researches in geodesy, geodynamics, gravimetry, in the studies of geodetic reference frame creation and development, Earth's shape and gravity field, Earth's rotation, geodetic theory, its application and some other directions are briefly described. For some objective reasons not all results obtained by Russian scientists on the field of geodesy are included in the report.

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Section: Physical Geodesymentioning

confidence: 99%

National Report for the IAG of the IUGG 2019–2022

2023

Geoinformatics Research Papers

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A method of high-precision calculating the normal height as the coordinate line`s length at an arbitrary distances from the Earth

Popadyev¹,

Rakhmonov

2022

G&C

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The authors highlight some special issues of the theory of heights. In establishing a global system of normal heights, one of the key matters is the final choice of a system of altitudes to represent elevation marks. In addition to proving the advantages of the mentioned system, it is necessary to eliminate some “white spots” within itself. In 2004, a more accurate way of calculating normal heights as the length of a coordinate line in a spheroidal system was considered. Simultaneously with this, in the papers by foreign researchers, methods of "practically accurate" calculation of the orthometric height were developed, which is associated with increasing knowledge of the earth`s crust upper layers structure. At studying the normal height, it is required to develop methods of its high-precision calculation and explore the properties of various options for setting the corresponding curvilinear integral. An expression is obtained for the normal height as a segment of the coordinate line of the spheroidal system; the one obtained in 2004, which contained inaccuracies, was corrected. The proposed method can be applied at an arbitrary distance from the reference ellipsoid.

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Some remarks about orthometric and normal height systems

Cited by 2 publications

References 0 publications

National Report for the IAG of the IUGG 2019–2022

National Report for the IAG of the IUGG 2019–2022

A method of high-precision calculating the normal height as the coordinate line`s length at an arbitrary distances from the Earth

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