Gravity field models from kinematic orbits of CHAMP, GRACE and GOCE satellites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F14%3A86091709" target="_blank" >RIV/61989100:27350/14:86091709 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/14:00399036 RIV/00025615:_____/14:#0002115

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.asr.2013.11.031" target="_blank" >http://dx.doi.org/10.1016/j.asr.2013.11.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.asr.2013.11.031" target="_blank" >10.1016/j.asr.2013.11.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gravity field models from kinematic orbits of CHAMP, GRACE and GOCE satellites

Popis výsledku v původním jazyce

The aim of our work is to generate Earth?s gravity field models from GPS positions of low Earth orbiters. Our inversion method is based on Newton?s second law, which relates the observed acceleration of the satellite with forces acting on it. The observed acceleration is obtained as numerical second derivative of kinematic positions. Observation equations are formulated using the gradient of the spherical harmonic expansion of the geopotential. Other forces are either modelled (lunisolar perturbations,tides) or provided by onboard measurements (nongravitational perturbations). From this linear regression model the geopotential harmonic coefficients are obtained. To this basic scheme of the acceleration approach we added some original elements, which may be useful in other inversion techniques as well. We tried to develop simple, straightforward and still statistically correct model of observations. (i) The model is linear in the harmonic coefficients, no a priori gravity field model i

Název v anglickém jazyce

Gravity field models from kinematic orbits of CHAMP, GRACE and GOCE satellites

Popis výsledku anglicky

The aim of our work is to generate Earth?s gravity field models from GPS positions of low Earth orbiters. Our inversion method is based on Newton?s second law, which relates the observed acceleration of the satellite with forces acting on it. The observed acceleration is obtained as numerical second derivative of kinematic positions. Observation equations are formulated using the gradient of the spherical harmonic expansion of the geopotential. Other forces are either modelled (lunisolar perturbations,tides) or provided by onboard measurements (nongravitational perturbations). From this linear regression model the geopotential harmonic coefficients are obtained. To this basic scheme of the acceleration approach we added some original elements, which may be useful in other inversion techniques as well. We tried to develop simple, straightforward and still statistically correct model of observations. (i) The model is linear in the harmonic coefficients, no a priori gravity field model i

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Advances in Space Research

ISSN

0273-1177

e-ISSN

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Svazek periodika

53

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

412-429

Kód UT WoS článku

000331498300005

EID výsledku v databázi Scopus

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