Estimation of height anomalies from gradients of the gravitational potential using a spectral combination method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F23%3A43972126" target="_blank" >RIV/49777513:23520/23:43972126 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/1345_2023_194" target="_blank" >https://doi.org/10.1007/1345_2023_194</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/1345_2023_194" target="_blank" >10.1007/1345_2023_194</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Estimation of height anomalies from gradients of the gravitational potential using a spectral combination method

Popis výsledku v původním jazyce

In this study, we apply a spectral combination method for estimation of height anomalies from gradients of the gravitational potential measured by satellites. The spectral combination method is used for solving over-determined problems within gravity field modelling when multiple types of gravity data are collected and used for recovery of unobservable quantities (typically the gravitational potential). The method applies solutions to geodetic boundary-value problems formulated in spherical approximation for gradients of the gravitational potential of up to the third order. Spectral forms of the solutions are combined using spectral weights defined under the condition of minimizing the global mean-square error of the estimators. Mathematical models are implemented and tested using gradients synthesized from a global geopotential model which allows for closed-loop testing of the estimators. The tests reveal among others that horizontal derivatives of the gravitational potential influence recovered values more than their vertical counterparts.

Název v anglickém jazyce

Estimation of height anomalies from gradients of the gravitational potential using a spectral combination method

Popis výsledku anglicky

In this study, we apply a spectral combination method for estimation of height anomalies from gradients of the gravitational potential measured by satellites. The spectral combination method is used for solving over-determined problems within gravity field modelling when multiple types of gravity data are collected and used for recovery of unobservable quantities (typically the gravitational potential). The method applies solutions to geodetic boundary-value problems formulated in spherical approximation for gradients of the gravitational potential of up to the third order. Spectral forms of the solutions are combined using spectral weights defined under the condition of minimizing the global mean-square error of the estimators. Mathematical models are implemented and tested using gradients synthesized from a global geopotential model which allows for closed-loop testing of the estimators. The tests reveal among others that horizontal derivatives of the gravitational potential influence recovered values more than their vertical counterparts.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GA21-13713S" target="_blank" >GA21-13713S: Odhady nejistot pro integrální transformace v geodézii</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Association of Geodesy Symposia

ISBN

978-3-031-55359-2

ISSN

0939-9585

e-ISSN

2197-9359

Počet stran výsledku

9

Strana od-do

37-45

Název nakladatele

Springer Cham

Místo vydání

Cham

Místo konání akce

Milan

Datum konání akce

13. 6. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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