Application of radial basis functions for height datum unification

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F18%3A43952011" target="_blank" >RIV/49777513:23520/18:43952011 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3390/geosciences8100369" target="_blank" >http://dx.doi.org/10.3390/geosciences8100369</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/geosciences8100369" target="_blank" >10.3390/geosciences8100369</a>

Result language

angličtina

Original language name

Application of radial basis functions for height datum unification

Original language description

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 observations available, for instance, terrestrial, aerial, marine gravity and satellite altimetry data. Thus, it is important to develop a proper tool to merge different data types for local gravity field modelling and determination of the geoid. In this study, radial basis functions, as a commonly useful tool for gravity data integration, are employed to model the gravity potential field of the southern part of Iran using terrestrial gravity anomalies, gravity anomalies derived from re-tracked satellite altimetry, marine gravity anomalies and gravity anomalies synthesized from an Earth gravity model. Reference GNSS/levelling (geometric) geoidal heights are used to evaluate the accuracy of the estimated local gravity field model. The gravimetric geoidal heights are in acceptable agreement with the geometric ones in terms of the standard deviation and the mean value which are 4.1 and 12 cm, respectively. Besides, the reference benchmark of the national first-order levelling network of Iran is located in the study area. The derived gravity model was used to compute the gravity potential difference at this point and then transformed into height difference which results in the value of the shift of this benchmark with respect to the geoid. The estimated shift shows a good agreement with previously published studies.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10508 - Physical geography

Project

<a href="/en/project/GA18-06943S" target="_blank" >GA18-06943S: Theory of processing higher-order geopotential gradients and their applications in geodesy</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geosciences

ISSN

2076-3263

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

—

UT code for WoS article

000448548800015

EID of the result in the Scopus database

2-s2.0-85054765807