Presentation is loading. Please wait.

Presentation is loading. Please wait.

The current status of K5 eVLBI intensive session Takashima, Kazuhiro; Machida,Morito; Fujisaku, Junichi; Kokado, Kensuke; Shigematsu, Hiromi Geographical.

Published byShauna Ramsey Modified over 8 years ago

Similar presentations

Presentation on theme: "The current status of K5 eVLBI intensive session Takashima, Kazuhiro; Machida,Morito; Fujisaku, Junichi; Kokado, Kensuke; Shigematsu, Hiromi Geographical."— Presentation transcript:

1 The current status of K5 eVLBI intensive session Takashima, Kazuhiro; Machida,Morito; Fujisaku, Junichi; Kokado, Kensuke; Shigematsu, Hiromi Geographical survey institute, JAPAN

2 TOPIC 1. What is intensive session ? 2. System components 1.K5 recording system 2.K5 correlator system 3. eVLBI data transfer 4. Contribution to “Deep Impact Mission” 5. Results of Intensive session

3 IVS intensive session Monitoring the Rotation of the Earth (UT1) Leap second (2006.1.1) Leap second (1999.1.1) Leap second (1997.7.1) ・ The Earth rotation speed is not constant, disturbed by various dynamic phenomena. ・ VLBI is one of few techniques that can monitor the earth’s rotation.

4 IVS-INT1 and IVS-INT2 The 1 hour-long 1-baseline intensive sessions for UT1 measurement daily. Monday through Friday Mark 5 is used on the Kokee- Wettzell baseline, and on Saturday and Sunday Mark5/K5 is used on the Wettzell-Tsukuba baseline. SessionDaysBaselineCorrelator INT1Mon-FriWz-KkWACO Mark5 INT2Sat-SunWz-TsGSI K5 eVLBI

5 Number of INT session K5 K4 Mark*

6 System component (recording) Reference signal distributor 16ch video amps K5PC Disk alley(SATA disk) Mark5 Wettzell K5 Tsukuba IVS-INT2

7 hard disk Data server Data server Data server Data server correlator Current form of K5/VSSP at correlator side Current form of K5/VSSP at correlator side Management computer correlator Correlation servers (with 3GHz Intel Xeon dual CPUs) data servers System component K5 correlator Gb-E

8 System component K5 correlator Optical network K5 PC cluster correlator Data transfer

9 GSI Correlator downloads Mark5 data from Wz. convert the format from Mark5 to K5 simultaneously. automatic procedures 50Gbyte ncftp Auto-script friendly resume available

10 gemnet GEANT 2 Super-SINET X-WIN Regensburg Tsukuba Wettzell traceroute to Wettzell Station (141.74. ), 30 hops max, 38 byte packets 1.tsukuba.gemnet.net (210.229. ) 0.319 ms 2.mecl.gemnet.net (210.229. ) 12.193 ms 3 nii-IX1-P3-0.sinet.ad.jp (150.99.199.5) 10.800 ms 4 NYC-gate1-P3-0.sinet.ad.jp (150.99.198.246) 186.511 ms 5 sinet.ny1.ny.geant.net (62.40.103.233) 182.895 ms 6 so-7-0-0.rt1.ams.nl.geant2.net (62.40.112.133) 262.334 ms 7 so-6-2-0.rt1.fra.de.geant2.net (62.40.112.57) 273.962 ms 8 dfn-gw.rt1.fra.de.geant2.net (62.40.124.34) 274.857 ms 9 cr-leipzig1-po4-0.x-win.dfn.de (188.1.18.190) 288.028 ms 10 cr-erlangen1-po2-3.x-win.dfn.de (188.1.18.18) 284.133 ms 11 ar-regensburg1-po0-0.x-win.dfn.de (188.1.72.38) 287.110 ms 12 ar-regensburg2-ge0-0-0.x-win.dfn.de (188.1.73.2) 286.465 ms 13 141.74. (141.74. ) 288.462 ms e-VLBI network K5 intensive session

11 Time Schedule (INT2) Sat Sun Mon 0 1224JST: UTC+9h FTP convert FTP convert Correlation etc Obs. Submit to IVS Turnaround period (Best case) Sat. session : 2 days Sun. session: 1 day Mark5 to PC Mark5 to PC

12 Turnaround period (INT1&2) 2006 (Jan.-Aug.)2005 Average days K4K5Mark4/5 2006-2.13.8 20055.83.05.0

13 processing factor (PF) = total length of correlation total length of a session efficiency comparison with PF from intensive session 200620052004 Better

14 Contribution to Deep Impact mission （ C ） NASA JPL ・ UT1 value provided by INT session eVLBI observations for IVS-INT2 ・ Data transfer for short time Contribution to the success of the mission http://deepimpact.jpl.nasa.gov/ Traveling at a relative velocity of 10 km/s and from about 864,000 km (536,865 miles) away, the impactor must strike the 6 km (3.7 mile) diameter comet. （ C ） NASA JPL 4 July 2005

15 UT1 during the Mission Prediction UT1 from VLBI observ. (not yet) 4-July Mission Date 2.2msec Equivalent to orbit error 21km

16 UT1 during the Mission INT2 (eVLBI) INT1 Result from VLBI (released) 4-July 1.1msec Equivalent to orbit error 10km

17 UT1 during the Mission 4-July 0.6msec Equivalent to orbit error 6km INT2 (eVLBI) INT1

18 UT1 during the Mission 4-July 0.6msec Equivalent to orbit error 6km INT2 (eVLBI) INT1

19 UT1 during the Mission 4-July 0.4msec Equivalent to orbit error 4km INT2 (eVLBI) INT1

20 UT1 during the Mission IMPACT 5:52 UT 4-July Success! INT2 (eVLBI) INT1 ©NASA JPL

21 Mon-Fri Sat-Sun Intensive session result (1) Leap second

22 Intensive session result (2) INT1 INT2 C04: the daily UT1-UTC by IERS CONT05 GSI WACO

23 CONT05 session ・ 11 VLBI stations participated in CONT05 sessions ・ The 15 days of continuous VLBI observation (September 12, 2005 ～ September 27,2005) ・ The goal is analysis of the high frequency(sub-daily) earth orientation parameter. Observation network

24 INT1&2 with CONT05 INT1(Kk-Wz) 18:30-19:30 UT INT2(Ts-Wz) 7:30- 8:30 UT 11 hours diff. Sub-daily variation

25 Thank you

Download ppt "The current status of K5 eVLBI intensive session Takashima, Kazuhiro; Machida,Morito; Fujisaku, Junichi; Kokado, Kensuke; Shigematsu, Hiromi Geographical."

Similar presentations

Dominik Stokłosa Pozna ń Supercomputing and Networking Center, Supercomputing Department INGRID 2008 Lacco Ameno, Island of Ischia, ITALY, April 9-11 Workflow.

Dominik Stokłosa Pozna ń Supercomputing and Networking Center, Supercomputing Department INGRID 2008 Lacco Ameno, Island of Ischia, ITALY, April 9-11 Workflow.
Processing of VLBI observation in St. Petersburg University Kudryashova Maria Astronomical Institute of Saint Petersburg University.

Processing of VLBI observation in St. Petersburg University Kudryashova Maria Astronomical Institute of Saint Petersburg University.
Multichannel Analysis of Surface Waves (MASW)

Multichannel Analysis of Surface Waves (MASW)
1 Sat07_73.ppt, 2007-10-23. GPS Definition. Precise satellite navigation-system, which after 1993 will give users a 3-D position and velocity as well as.

1 Sat07_73.ppt, GPS Definition. Precise satellite navigation-system, which after 1993 will give users a 3-D position and velocity as well as.
THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, 13-16 November 2007, Tokyo, Japan OPTIMUM ARRAY DESIGN FOR THE DETECTION OF DISTANT.

THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, November 2007, Tokyo, Japan OPTIMUM ARRAY DESIGN FOR THE DETECTION OF DISTANT.
[1] ICHIKAWA Ryuichi, [2] ISHII Atsutoshi, [3] TAKIGUCHI Hiroshi, KIMURA Moritaka, [1] SEKIDO Mamoru, [1] TAKEFUJI Kazuhiro, [1] UJIHARA Hideki, [1] HOBIGER.

[1] ICHIKAWA Ryuichi, [2] ISHII Atsutoshi, [3] TAKIGUCHI Hiroshi, KIMURA Moritaka, [1] SEKIDO Mamoru, [1] TAKEFUJI Kazuhiro, [1] UJIHARA Hideki, [1] HOBIGER.
1 DSN Network e-VLBI Calibration of Earth Orientation L. D. Zhang a,b, A. Steppe a, G. Lanyi a Presentation at 5-th International e-VLBI Workshop Westford,

1 DSN Network e-VLBI Calibration of Earth Orientation L. D. Zhang a,b, A. Steppe a, G. Lanyi a Presentation at 5-th International e-VLBI Workshop Westford,
Outline of Talk Introduction Toolbox functionality Results Conclusions and future development.

Outline of Talk Introduction Toolbox functionality Results Conclusions and future development.
Measurements Calibration EGU06-A-05466/G7-1TH5P-0488 Atmospheric parameter comparisons at the Tsukuba and Kashima VLBI stations during the CONT05 VLBI.

Measurements Calibration EGU06-A-05466/G7-1TH5P-0488 Atmospheric parameter comparisons at the Tsukuba and Kashima VLBI stations during the CONT05 VLBI.
PHY 231 1 PHYSICS 231 Lecture 14: Collisions II: The momentum strikes back. Remco Zegers Walk-in hour: Thursday 11:30-13:30 am Helproom.

PHY PHYSICS 231 Lecture 14: Collisions II: The momentum strikes back. Remco Zegers Walk-in hour: Thursday 11:30-13:30 am Helproom.
Laser Ranging Contributions to Earth Rotation Studies Richard S. Gross Jet Propulsion Laboratory California Institute of Technology Pasadena, CA 91109–8099,

Laser Ranging Contributions to Earth Rotation Studies Richard S. Gross Jet Propulsion Laboratory California Institute of Technology Pasadena, CA 91109–8099,
Ongoing e-VLBI Developments with K5 VLBI System Hiroshi Takeuchi, Tetsuro Kondo, Yasuhiro Koyama, and Moritaka Kimura Kashima Space Research Center/NICT.

Ongoing e-VLBI Developments with K5 VLBI System Hiroshi Takeuchi, Tetsuro Kondo, Yasuhiro Koyama, and Moritaka Kimura Kashima Space Research Center/NICT.
15 Sep 2006 IVS VLBI2010 Haystack0 It’s About Time !!!!!

15 Sep 2006 IVS VLBI2010 Haystack0 It’s About Time !!!!!
E-VLBI Development at Haystack Observatory Alan Whitney Chet Ruszczyk Kevin Dudevoir Jason SooHoo MIT Haystack Observatory 24 March 2006 EVN TOG meeting.

E-VLBI Development at Haystack Observatory Alan Whitney Chet Ruszczyk Kevin Dudevoir Jason SooHoo MIT Haystack Observatory 24 March 2006 EVN TOG meeting.
E-VLBI Development at Haystack Observatory Alan Whitney Chet Ruszczyk MIT Haystack Observatory 10 Jan 2006 IVS General Meeting Concepion, Chile.

E-VLBI Development at Haystack Observatory Alan Whitney Chet Ruszczyk MIT Haystack Observatory 10 Jan 2006 IVS General Meeting Concepion, Chile.
Electronic Transmission of Very- Long Baseline Interferometry Data National Internet2 day, March 18, 2004 David LapsleyAlan Whitney MIT Haystack Observatory,

Electronic Transmission of Very- Long Baseline Interferometry Data National Internet2 day, March 18, 2004 David LapsleyAlan Whitney MIT Haystack Observatory,
E-VLBI Development at Haystack Observatory 5 th Annual e-VLBI Workshop Haystack Observatory 20 September 2006 Alan R. Whitney Kevin Dudevoir Chester Ruszczyk.

E-VLBI Development at Haystack Observatory 5 th Annual e-VLBI Workshop Haystack Observatory 20 September 2006 Alan R. Whitney Kevin Dudevoir Chester Ruszczyk.
DORIS - DAYS Toulouse May 2-3, 2000 DORIS Doppler Orbitography and Radiopositioning Integrated by Satellite  Basic system concept  Main missions  Schedules.

DORIS - DAYS Toulouse May 2-3, 2000 DORIS Doppler Orbitography and Radiopositioning Integrated by Satellite  Basic system concept  Main missions  Schedules.
E-RemoteCtrl: Concepts for VLBI station control as part of NEXPReS Arpad Szomoru (JIVE) Alexander Neidhardt (FESG), Martin Ettl (FESG), Matthias Mühlbauer.

E-RemoteCtrl: Concepts for VLBI station control as part of NEXPReS Arpad Szomoru (JIVE) Alexander Neidhardt (FESG), Martin Ettl (FESG), Matthias Mühlbauer.
2012 DiFX user’s meeting, Sydney, Australia USNO Software Correlator: Status Report Outline USNO/WACO Background USNO Prototype Software Correlator (UPSC)

2012 DiFX user’s meeting, Sydney, Australia USNO Software Correlator: Status Report Outline USNO/WACO Background USNO Prototype Software Correlator (UPSC)

Similar presentations

Ads by Google