+ All Categories
Transcript
Page 1: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT)Lapsley, and Whitney (MIT Haystack)

Network Engineering and NOC SessionsAPAN Conference 2005 in Bangkok

January 27, 2005

e-VLBI Deployments with Research Internet

Page 2: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

Acknowledgement

MAX Gigapop (Jerry Sobieski)TransPAC (Chris Robb)NORDUnet (Lars Fischer)APAN Tokyo NOC (Tanaka, Hattori, Matsui)JGN II NOC (Kakinuma, Hori, Hatachi, Nakamura)NICT R&D NOC (Machizawa, Takemoto, Kitamura)Internet2 (Charles Yun)Metsahovi Radio Observatory (Jouko Ritakari)MIT Haystack (Jason SooHoo, Kevin Dudevoir)Shanghai Observatory (An Tao)JIVE (Sergei Pogrebenko)SURFnet (Erik Radius)Other many networks and institutions…

Page 3: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

Radio Telescopes

NICT Kashima Space Center 34m

Onsala Space Observatory 20m (left)

Perks 64m (right)Australia Telescope National Facility

MIT Haystack 18m

Shanghai25m

Page 4: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

VLBI (Very Long Baseline Interferometry)de

lay

radio signal from a star

correlator

A/D clockA/D

 Internet

clock

•e-VLBI geographically distributed observation, interconnecting radio antennas over the world

Large Bandwidth-Delay Product Network issue

ASTRONOMYGEODESY

~Gbps~Gbps

•Gigabit / real-time VLBI multi-gigabit rate sampling

A B

A

B

d

Page 5: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

Updates since APAN Cairns (July 2004)

SC2004 Nov. 8-11, 2004, PittsburghJGN II Osaka Jan. 17-18, 2005, OsakaOthers (JIVE Dec.22, 2004,

Huygens Jan. 14, 2004)e-VLBI Data Transfers and Antennas

Page 6: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

e-VLBI SC2004 Network Configuration

NICT Kashima MIT Haystack

Abilene

APAN Tokyo

Onsala

Stockholm

AMS

SUNET

Page 7: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

e-VLBI Demonstration in SC 2004 (Nov. 2004)

MIT Haystack (Westford)GGAO (Maryland)Onsala (SE)NICT Kashima (JP)

first 20 minutes every hours512 Mbps with Haystack and GGAO256 Mbps with all 4 stations

Alan Whitney (Haystack)

Charles Yun (I2)Correlationfrom Haystack Mark 5

Kashima to Haystackvia Tokyo XP

Page 8: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

MITHaystack

NICTKashima

Abilene(10G)

JGN II Int’l(10G) Tokyo

JGN II(1G/10G)

1G/2.5GJGN II(10G)

Osaka

Venue

10G

#1

#2

#3

#4

GEN-AGEN-B

AA

BB

AA BB

TT

SX SX

T x4

Raid

Raid

ファイバーチャンネル

LCDLCD

NE (Network Emulator)

NE

T x4

SX x2

SX x2

ファイバーチャンネル

TT

LCDLCD

Measure-B Measure-A

e-VLBI Demonstration by NICT JGN II Symposium in OsakaJanuary 17-18, 2005

Page 9: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

e-VLBI Demonstration in JGN II Osaka (Jan. 2005)

e-VLBI data transfer achieved ~700Mbps from Haystack to Osaka

~900Mbps from Kashima to Osaka

Software Cross Correlation ~240Mbps per station

Dr. Koyama

4 Apple G5 Server machines (8 CPUs in Total)

Page 10: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

Huygens e-VLBI Preliminary ReportJanuary 5, 2005 Shanghai to Kashima 1-2 Mbps for 3.8GB x4January 14, 2005 Shanghai to Kashima 40-50 Mbps

No fringe detected

Japan - Australia (tsunami)experiment under consideration(Australia Telescope National Facility)

"Jouko Ritakari" [email protected] reported December 22, 2004400 Mbit/s eVLBI transfer between NICT Kashima and JIVE using Tsunami protocol.

Kashima-JIVE e-VLBI experiment (Dec.22, 2004)

Possible Future e-VLBI experiment with RussiaNICT Kashima shipped IP VLBI board to Russia (Lebedev Institute)Fibers are available in the nearest town.

Page 11: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

e-VLBI Data Transfer

Real-time e-VLBI – flat-rate live data transfer

Common e-VLBI – file transfer

InternetSynchronize

Correlation

Carry the disk to the nearest stationto put on-line

Correlate among many combinations concurrently to get more precise data (like a virtual huge antenna)

Future - multicast

Page 12: Hirabaru, Koyama, Kimura, Sekido, Takeuchi, Kondo (NICT) Lapsley, and Whitney (MIT Haystack)

                                       

VLBI Antenna Locations in North-East Asia

Shintotsukawa 3.8m

Tomakomai 11m, FTTH (100M)70km from Sapporo

Mizusawa 10m 20m118km from Sendai

Tsukuba 32m, OC48/ATMx2 SuperSINETKashima 34m, 1Gx2 JGN, OC48/ATM Galaxy

Yamaguchi 32m1G, 75M SINET

Gifu 11m 3m, OC48/ATMx2 SuperSINET

Usuda 64m, OC48/ATM Galaxy

Nobeyama 45mOC48/ATM Galaxy

Nanshan (Urumqi) 25m70km from Urumqi

Koganei 34m, 1Gx2 JGN, OC48/ATM Galaxy

Miyun (Beijing) 50m50km from Beijing

2Mbps

2Mbps

Yunnan (Kunming) 3m (40m)10km from Kunming

Sheshan (Shanghai) 25m30km from Shanghai

Observatory is on CSTNET at 100M

Jeju 20mTamna U

Seoul 20mYonsei U

Ulsan 20mU Ulsan

Daejon 14mTaeduk

Ishigaki 20m

Ogasawara 20mChichijima 10m

Iriki 20m Kagoshima 6mAira 10m

Legend

connectednot yet connectedantenna under construction


Top Related