Radio Astronomy data transfer using KAREN network

Author

Weston, Stuart ; Natusch, Timothy ; Gulyaev, Sergei

Author_Institution

Inst. for Radio Astron. & Space Res., Auckland Univ. of Technol., Auckland, New Zealand

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

The Kiwi Advanced Research and Education Network (KAREN) has been used to transfer large volumes of radio astronomical data between the Radio Astronomical Observatory at Warkworth, New Zealand and various international organizations involved in joint projects and VLBI observations. Here we report on the current status of connectivity and on the results of testing different data transfer protocols. We investigate new UDP protocols such as `tsunami´ and UDT and demonstrate that the UDT protocol is more efficient than `tsunami´ and `ftp´. We also report on tests of direct data streaming from the radio telescope receiving system to a correlation centre without intermediate buffering or recording (real-time eVLBI).

Keywords

astronomy computing; computer networks; data communication; radioastronomical techniques; radioastronomy; transport protocols; KAREN network; Kiwi Advanced Research and Education Network; Radio Astronomical Observatory; UDT protocol; VLBI observations; data transfer protocols; direct data streaming; ftp protocol; radioastronomy data transfer; radiotelescope receiving system; real time eVLBI; tsunami UDP protocol; Correlation; Educational institutions; Observatories; Protocols; Radio astronomy; Real time systems; Tsunami;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6051235

Filename

6051235