Ground track density considerations on the resolvability of gravity field harmonics in a repeat

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F15%3A86095107" target="_blank" >RIV/61989100:27350/15:86095107 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025615:_____/15:#0002176

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.asr.2015.06.020" target="_blank" >http://dx.doi.org/10.1016/j.asr.2015.06.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.asr.2015.06.020" target="_blank" >10.1016/j.asr.2015.06.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ground track density considerations on the resolvability of gravity field harmonics in a repeat

Popis výsledku v původním jazyce

One of the limiting factors in the determination of global gravity field parameters is the spatial sampling, namely during phases when the satellite is in an orbit with few revolutions for each repeat cycle. This often happens when it is freely passing (drifting) through the atmosphere and encountering a fair number of such deficient repeat orbits. This research was triggered in 2004 by the significant but only temporary, 2-3 months long, decrease of the accuracy of monthly solutions for the gravity field variations derived from GRACE. The reason for the dip was the 61/4 resonance in the GRACE orbits in autumn 2004. At this resonance, the ground track density dramatically decreased and large (mainly longitude) gaps appeared in the data-coverage of theglobe. The problem of spatial sampling has been studied repeatedly and simple rules have been derived to limit the maximum order for unconstrained solutions (inversions) for the gravity field parameters or their variations from observatio

Název v anglickém jazyce

Ground track density considerations on the resolvability of gravity field harmonics in a repeat

Popis výsledku anglicky

One of the limiting factors in the determination of global gravity field parameters is the spatial sampling, namely during phases when the satellite is in an orbit with few revolutions for each repeat cycle. This often happens when it is freely passing (drifting) through the atmosphere and encountering a fair number of such deficient repeat orbits. This research was triggered in 2004 by the significant but only temporary, 2-3 months long, decrease of the accuracy of monthly solutions for the gravity field variations derived from GRACE. The reason for the dip was the 61/4 resonance in the GRACE orbits in autumn 2004. At this resonance, the ground track density dramatically decreased and large (mainly longitude) gaps appeared in the data-coverage of theglobe. The problem of spatial sampling has been studied repeatedly and simple rules have been derived to limit the maximum order for unconstrained solutions (inversions) for the gravity field parameters or their variations from observatio

Druh

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

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

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

—

Svazek periodika

56

Číslo periodika v rámci svazku

2015

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

1146-1160

Kód UT WoS článku

000360596600012

EID výsledku v databázi Scopus

2-s2.0-84938418919