The estimation of the zero-height geopotential level of a local vertical datum (LVD) is a key
task towards the connection of isolated physical height frames and their unification into a …

The direct method of vertical datum unification requires estimates of the ocean's mean
dynamic topography (MDT) at tide gauges, which can be sourced from either geodetic or …

Two levelling-based vertical datums have been used in North America, namely CGVD28 in
Canada and NAVD88 in the USA and Mexico. Although the two datums will be replaced by …

A suitable representation of the regional gravity field is used to estimate relative offsets
between national height system realizations in Europe. The method used is based on a …

Heights as the basic geographical information are very important to study marine
geophysics, geodesy and oceanography. Based on the astronomical leveling principle, we …

Values of scalar, vector and second-order tensor parameters of the Earth's gravitational field
have been collected by various sensors in geodesy and geophysics. Such observables …

Islands and the mainland are separated by seas, and the distances between them might be
so long that the height on the mainland cannot be exactly translated to the islands, resulting …

The paper proposes a new algorithm to unify height datums in different regions, which is
based on the solution of the linearized fixed-gravimetric boundary value problem. Compared …

The accurate estimation of the zero-height geopotential level in a local vertical datum (LVD)
is critical for linking traditional height reference systems to a global height system. In this …

Local gravity field modelling demands high-quality gravity data as well as an appropriate
mathematical model. Particularly in coastal areas, there may be different types of gravity …