The use of astronomy VLBA campaign MOJAVE for geodesy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00547623" target="_blank" >RIV/67985815:_____/21:00547623 - isvavai.cz</a>

Result on the web

<a href="http://hdl.handle.net/11104/0323822" target="_blank" >http://hdl.handle.net/11104/0323822</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00190-021-01551-3" target="_blank" >10.1007/s00190-021-01551-3</a>

Result language

angličtina

Original language name

The use of astronomy VLBA campaign MOJAVE for geodesy

Original language description

We investigated the suitability of the astronomical 15 GHz Very Long Baseline Array (VLBA) observing program MOJAVE-5 for estimation of geodetic parameters, such as station coordinates and Earth orientation parameters. We processed a concurrent dedicated VLBA geodesy program observed at 2.3 GHz and 8.6 GHz starting on September 2016 through July 2020 as reference dataset. We showed that the baseline length repeatability from MOJAVE-5 experiments is only a factor of 1.5 greater than from the dedicated geodetic dataset and still below 1 ppb. The wrms of the difference of estimated Earth orientation parameters with respect to the reference IERS C04 time series are a factor of 1.3 to 1.8 worse. We isolated three major differences between the datasets in terms of their possible impact on the geodetic results, i.e. the scheduling approach, treatment of the ionospheric delay, and selection of target radio sources. We showed that the major factor causing discrepancies in the estimated geodetic parameters is the different scheduling approach of the datasets. We conclude that systematic errors in MOJAVE-5 dataset are low enough for these data to be used as an excellent testbed for further investigations on the radio source structure effects in geodesy and astrometry.

Czech name

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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

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Journal of Geodesy

ISSN

0949-7714

e-ISSN

1432-1394

Volume of the periodical

95

Issue of the periodical within the volume

9

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

101

UT code for WoS article

000688008700001

EID of the result in the Scopus database

2-s2.0-85113778199