NAOC Open IR
A broadband VLBI system using transportable stations for geodesy and metrology: an alternative approach to the VGOS concept
Sekido, Mamoru1; Takefuji, Kazuhiro2; Ujihara, Hideki1; Kondo, Tetsuro1,9; Tsutsumi, Masanori1; Kawai, Eiji1; Hachisu, Hidekazu3; Nemitz, Nils3; Pizzocaro, Marco4; Clivati, Cecilia4; Perini, Federico5; Negusini, Monia5; Maccaferri, Giuseppe5; Ricci, Roberto4,5; Roma, Mauro5; Bortolotti, Claudio5; Namba, Kunitaka3; Komuro, Jun'ichi3; Ichikawa, Ryuichi3; Suzuyama, Tomonari6; Watabe, Ken-ichi6; Leute, Julia7,8; Petit, Gerard7; Calonico, Davide4; Ido, Tetsuya3
2021-03-25
Source PublicationJOURNAL OF GEODESY
ISSN0949-7714
Volume95Issue:4Pages:27
AbstractWe have developed a broadband VLBI (very long baseline interferometry) system inspired by the concept of the VLBI Global Observing System (VGOS). The new broadband VLBI system was implemented in the Kashima 34 m antenna and in two transportable stations utilizing 2.4 m diameter antennas. The transportable stations have been developed as a tool for intercontinental frequency comparison but are equally useful for geodesy. To enable practical use of such small VLBI stations in intercontinental VLBI, we have developed the procedure of node-hub style VLBI: In joint observation with a large, high sensitivity 'hub' antenna, the closure delay relation provides a virtual delay observable between 'node' stations. This overcomes the limited sensitivity of the small diameter node antennas, while error sources associated with large diameter antennas, such as gravitational deformation and delay changes in necessarily long signal cables, are eliminated. We show that this scheme does not result in an increased sensitivity to radio source structure if one side of the baseline triangle is kept short. We have performed VLBI experiments utilizing this approach over both short range and intercontinental distance. This article describes the system components, signal processing procedure, experiment, and results in terms of baseline repeatability. Our measurements reveal signatures of structure effects in the correlation amplitude of several of the observed radio sources. We present a model of the frequency-dependent source size for 1928+738 derived from correlation amplitude data observed in four frequency bands.
KeywordBroadband VLBI Transportable VLBI Direct RF-sampling Closure delay
Funding OrganizationJGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF
DOI10.1007/s00190-021-01479-8
Language英语
Funding ProjectJGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF[ANR-10-LABX-48-01]
Funding OrganizationJGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; JGN research testbed network ; JGN research testbed network ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; Joint Development Research of the National Astronomical Observatory of Japan (NAOJ) in 2013-2014 ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF
WOS Research AreaGeochemistry & Geophysics ; Remote Sensing
WOS SubjectGeochemistry & Geophysics ; Remote Sensing
WOS IDWOS:000634834200001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78563
Collection中国科学院国家天文台
Corresponding AuthorSekido, Mamoru
Affiliation1.Natl Inst Informat & Commun Technol, Kashima Space Technol Ctr, Kashima, Japan
2.Japan Aerosp Explorat Agcy, Usuda Deep Space Ctr, Saku, Nagano, Japan
3.Natl Inst Informat & Commun Technol, Koganei, Tokyo, Japan
4.Ist Nazl Ric Metrol, Turin, Italy
5.Ist Nazl Astrofis, Ist Radioastron, Bologna, Italy
6.Natl Metrol Inst Japan, Tsukuba, Ibaraki, Japan
7.Bur Int Poids & Mesures, Sevres, France
8.Observ Paris, LNE SYRTE, Paris, France
9.Shanghai Astron Observ, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Sekido, Mamoru,Takefuji, Kazuhiro,Ujihara, Hideki,et al. A broadband VLBI system using transportable stations for geodesy and metrology: an alternative approach to the VGOS concept[J]. JOURNAL OF GEODESY,2021,95(4):27.
APA Sekido, Mamoru.,Takefuji, Kazuhiro.,Ujihara, Hideki.,Kondo, Tetsuro.,Tsutsumi, Masanori.,...&Ido, Tetsuya.(2021).A broadband VLBI system using transportable stations for geodesy and metrology: an alternative approach to the VGOS concept.JOURNAL OF GEODESY,95(4),27.
MLA Sekido, Mamoru,et al."A broadband VLBI system using transportable stations for geodesy and metrology: an alternative approach to the VGOS concept".JOURNAL OF GEODESY 95.4(2021):27.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
[Ujihara, Hideki]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
[Ujihara, Hideki]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
[Ujihara, Hideki]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.