Abstract
Spirit levelling is a complex geodetic measurement that combines several elementary steps, already defined in Sect. 4.6 (see also Fig. 4.6), each of them providing a step increment on a short baseline; such increments are then added along a levelling line, joining two stations \(\text {P}\) and \(\text {Q}\). In this way, recalling (4.56), we have a measurement related to the extremes \(\text {P}\) and \(\text {Q}\) and to the path connecting them.
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Notes
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The authors are aware that while editing the book the same result has been independently published by (Sjoberg 2018); we are then happy to acknowledge this coincidence, confirming our findings.
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Sansò, F., Reguzzoni, M., Barzaghi, R. (2019). The Relation Between Levelling, Geodetic and Other Unholonomic Heights. In: Geodetic Heights. Springer Geophysics. Springer, Cham. https://doi.org/10.1007/978-3-030-10454-2_6
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DOI: https://doi.org/10.1007/978-3-030-10454-2_6
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