The UTMOST: A Hybrid Digital Signal Processor Transforms the Molonglo Observatory Synthesis Telescope

被引：64

作者：

Bailes, M. ^{[1
,2
]}

Jameson, A. ^{[1
,2
]}

Flynn, C. ^{[1
,2
]}

Bateman, T. ^{[3
,4
]}

Barr, E. D. ^{[1
,2
,5
]}

Bhandari, S. ^{[1
,2
]}

Bunton, J. D. ^{[4
]}

Caleb, M. ^{[1
,2
,6
]}

Campbell-Wilson, D. ^{[2
,3
]}

Farah, W. ^{[1
]}

Gaensler, B. ^{[2
,3
,7
]}

Green, A. J. ^{[2
,3
]}

Hunstead, R. W. ^{[3
]}

Jankowski, F. ^{[1
,2
]}

Keane, E. F. ^{[1
,2
,8
]}

Krishnan, V. Venkatraman ^{[1
,2
]}

Murphy, Tara ^{[2
,3
]}

O'Neill, M. ^{[1
]}

Oslowski, S. ^{[1
]}

Parthasarathy, A. ^{[1
,2
]}

Ravi, V. ^{[1
,2
,9
]}

Rosado, P. ^{[1
]}

Temby, D. ^{[3
]}

机构：

[1] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Mail H30,POB 218, Hawthorn, Vic 3122, Australia

[2] Univ Sydney, Sch Phys, ARC Ctr Excellence All Sky Astrophys CAASTRO, Bldg A28, Sydney, NSW 2006, Australia

[3] Univ Sydney, Sch Phys A28, Sydney Inst Astron, Sydney, NSW 2006, Australia

[4] Australia Telecope Natl Facil, POB 76, Epping, NSW 1710, Australia

[5] Max Planck Inst Radioastron MPIfR, Hugel 69, D-53121 Bonn, Germany

[6] Australian Natl Univ, Res Sch Astron & Astrophys, Cotter Rd, Weston, ACT 2611, Australia

[7] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada

[8] Jodrell Bank Observ, SKA Org, Macclesfield SK11 9DL, Cheshire, England

[9] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 2017年 / 34卷

基金：

澳大利亚研究理事会;

关键词：

instrumentation: interferometers; stars: pulsars: general; techniques: interferometric; GALACTIC PLANE SURVEY; RADIO IMAGING SURVEY; SUPERNOVA REMNANT; SOUTHERN SKY; ASTRONOMY; CORRELATOR; SOFTWARE; SUMSS; BURST;

D O I：

10.1017/pasa.2017.39

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Molonglo Observatory Synthesis Telescope (MOST) is an 18000 m(2) radio telescope located 40 km from Canberra, Australia. Its operating band (820-851 MHz) is partly allocated to telecommunications, making radio astronomy challenging. We describe how the deployment of new digital receivers, Field Programmable Gate Array-based filterbanks, and server-class computers equipped with 43 Graphics Processing Units, has transformed the telescope into a versatile new instrument (UTMOST) for studying the radio sky on millisecond timescales. UTMOST has 10 times the bandwidth and double the field of view compared to the MOST, and voltage record and playback capability has facilitated rapid implementaton of many new observing modes, most of which operate commensally. UTMOST can simultaneously excise interference, make maps, coherently dedisperse pulsars, and perform real-time searches of coherent fan-beams for dispersed single pulses. UTMOST operates as a robotic facility, deciding how to efficiently target pulsars and how long to stay on source via real-time pulsar folding, while searching for single pulse events. Regular timing of over 300 pulsars has yielded seven pulsar glitches and three Fast Radio Bursts during commissioning. UTMOST demonstrates that if sufficient signal processing is applied to voltage streams, innovative science remains possible even in hostile radio frequency environments.

引用

页数：11

共 38 条

[1] The square kilometre array molonglo prototype (SKAMP) correlator [J].