Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· arXiv e-print (arXiv:1502.05015)
· References in the article
· Citations to the Article (4) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
A digital-receiver for the MurchisonWidefield Array
Authors:
Prabu, Thiagaraj; Srivani, K. S.; Roshi, D. Anish; Kamini, P. A.; Madhavi, S.; Emrich, David; Crosse, Brian; Williams, Andrew J.; Waterson, Mark; Deshpande, Avinash A.; Shankar, N. Udaya; Subrahmanyan, Ravi; Briggs, Frank H.; Goeke, Robert F.; Tingay, Steven J.; Johnston-Hollitt, Melanie; R, Gopalakrishna M.; Morgan, Edward H.; Pathikulangara, Joseph; Bunton, John D.; Hampson, Grant; Williams, Christopher; Ord, Stephen M.; Wayth, Randall B.; Kumar, Deepak; Morales, Miguel F.; deSouza, Ludi; Kratzenberg, Eric; Pallot, D.; McWhirter, Russell; Hazelton, Bryna J.; Arcus, Wayne; Barnes, David G.; Bernardi, Gianni; Booler, T.; Bowman, Judd D.; Cappallo, Roger J.; Corey, Brian E.; Greenhill, Lincoln J.; Herne, David; Hewitt, Jacqueline N.; Kaplan, David L.; Kasper, Justin C.; Kincaid, Barton B.; Koenig, Ronald; Lonsdale, Colin J.; Lynch, Mervyn J.; Mitchell, Daniel A.; Oberoi, Divya; Remillard, Ronald A.; Rogers, Alan E.; Salah, Joseph E.; Sault, Robert J.; Stevens, Jamie B.; Tremblay, S.; Webster, Rachel L.; Whitney, Alan R.; Wyithe, Stuart B.
Affiliation:
AA(Raman Research Institute (RRI)), AB(Raman Research Institute (RRI)), AC(National Radio Astronomy Observatory), AD(Raman Research Institute (RRI)), AE(Raman Research Institute (RRI)), AF(International Centre for Radio Astronomy Research - Curtin University), AG(International Centre for Radio Astronomy Research - Curtin University), AH(International Centre for Radio Astronomy Research - Curtin University), AI(Australian National University (ANU); , International Centre for Radio Astronomy Research - Curtin University), AJ(Raman Research Institute (RRI)), AK(Raman Research Institute (RRI)), AL(Raman Research Institute (RRI); , ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)), AM(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , Australian National University (ANU)), AN(MIT Kavli Institute), AO(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , International Centre for Radio Astronomy Research - Curtin University), AP(Victoria University of Wellington), AQ(Raman Research Institute (RRI)), AR(MIT Kavli Institute), AS(CSIRO Computational Informatics), AT(CSIRO Astronomy and Space Science), AU(CSIRO Astronomy and Space Science), AV(MIT Kavli Institute), AW(International Centre for Radio Astronomy Research - Curtin University), AX(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , International Centre for Radio Astronomy Research - Curtin University), AY(Raman Research Institute (RRI)), AZ(University of Washington-Seattle), BA(University of Sydney; , CSIRO Astronomy and Space Science), BB(MIT Haystack Observatory), BC(International Centre for Radio Astronomy Research - Curtin University), BD(MIT Haystack Observatory), BE(University of Washington-Seattle), BF(International Centre for Radio Astronomy Research - Curtin University), BG(Swinburne University of Technology), BH(Harvard-Smithsonian Center for Astrophysics; , Square Kilometre Array South Africa (SKA SA)), BI(International Centre for Radio Astronomy Research - Curtin University), BJ(Arizona State University), BK(MIT Haystack Observatory), BL(MIT Haystack Observatory), BM(Harvard-Smithsonian Center for Astrophysics), BN(International Centre for Radio Astronomy Research - Curtin University), BO(MIT Kavli Institute), BP(University of Wisconsin-Milwaukee), BQ(Harvard-Smithsonian Center for Astrophysics; , University of Michigan), BR(MIT Haystack Observatory), BS(CSIRO Astronomy and Space Science), BT(MIT Haystack Observatory), BU(International Centre for Radio Astronomy Research - Curtin University), BV(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , CSIRO Astronomy and Space Science), BW(MIT Haystack Observatory; , National Centre for Radio Astrophysics - TIFR), BX(MIT Kavli Institute), BY(MIT Haystack Observatory), BZ(MIT Haystack Observatory), CA(University of Melbourne), CB(University of Tasmania; , CSIRO Astronomy and Space Science), CC(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , International Centre for Radio Astronomy Research - Curtin University), CD(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , University of Melbourne), CE(MIT Haystack Observatory), CF(ARC Centre of Excellence for All-sky Astrophysics (CAASTRO); , University of Melbourne)
Publication:
Experimental Astronomy, Volume 39, Issue 1, pp.73-93 (ExA Homepage)
Publication Date:
03/2015
Origin:
SPRINGER
Keywords:
ADC, Channelizer, Digital-receiver, FPGA, MWA, MRO, PFB, Radio astronomy instrumentation, Radio telescope, SKA
Abstract Copyright:
(c) 2015: Springer Science+Business Media Dordrecht
DOI:
10.1007/s10686-015-9444-3
Bibliographic Code:
2015ExA....39...73P

Abstract

An FPGA-based digital-receiver has been developed for a low-frequency imaging radio interferometer, the Murchison Widefield Array (MWA). The MWA, located at the Murchison Radio-astronomy Observatory (MRO) in Western Australia, consists of 128 dual-polarized aperture-array elements (tiles) operating between 80 and 300 MHz, with a total processed bandwidth of 30.72 MHz for each polarization. Radio-frequency signals from the tiles are amplified and band limited using analog signal conditioning units; sampled and channelized by digital-receivers. The signals from eight tiles are processed by a single digital-receiver, thus requiring 16 digital-receivers for the MWA. The main function of the digital-receivers is to digitize the broad-band signals from each tile, channelize them to form the sky-band, and transport it through optical fibers to a centrally located correlator for further processing. The digital-receiver firmware also implements functions to measure the signal power, perform power equalization across the band, detect interference-like events, and invoke diagnostic modes. The digital-receiver is controlled by high-level programs running on a single-board-computer. This paper presents the digital-receiver design, implementation, current status, and plans for future enhancements.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints