Orthometric correction | Article about orthometric correction by The Free Dictionary
orthometric correction[¦ȯr·thə¦me·trik kə′rek·shən]
A systematic correction that must be applied to a measured difference in elevation since level surfaces at varying elevations are not absolutely parallel.
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Another way is to compute the orthometric correction
to the Helmert's approximation ([MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]) to transform the approximate value to the rigorous height.
Spheroidal (normal) orthometric correction is calculated using the equation (Bilajbegovic 1984):
The size of normal corrections is comparable to normal orthometric corrections that were taken into account in the height system of Slovenia.