dc.contributor.author | Williams, Christopher Leigh | |
dc.contributor.author | McWhirter, Stephen R. | |
dc.contributor.author | Kincaid, Barton B. | |
dc.contributor.author | Lonsdale, Colin John | |
dc.contributor.author | Oberoi, Divya | |
dc.contributor.author | Salah, Joseph E. | |
dc.contributor.author | Morgan, Edward H | |
dc.contributor.author | Hewitt, Jacqueline N | |
dc.contributor.author | Kratzenberg, Eric W | |
dc.contributor.author | Cappallo, Roger J | |
dc.contributor.author | Goeke, Robert F | |
dc.contributor.author | Remillard, Ronald A | |
dc.contributor.author | Corey, Brian E | |
dc.contributor.author | Rogers, Alan E E | |
dc.contributor.author | Whitney, Alan R | |
dc.date.accessioned | 2015-08-07T14:12:25Z | |
dc.date.available | 2015-08-07T14:12:25Z | |
dc.date.issued | 2015-02 | |
dc.date.submitted | 2014-03 | |
dc.identifier.issn | 0922-6435 | |
dc.identifier.issn | 1572-9508 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/98058 | |
dc.description.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. | en_US |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1007/s10686-015-9444-3 | en_US |
dc.rights | Creative Commons Attribution-Noncommercial-Share Alike | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | en_US |
dc.source | arXiv | en_US |
dc.title | A digital-receiver for the Murchison Widefield Array | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Prabu, Thiagaraj, K. S. Srivani, D. Anish Roshi, P. A. Kamini, S. Madhavi, David Emrich, Brian Crosse, et al. “A Digital-Receiver for the MurchisonWidefield Array.” Exp Astron 39, no. 1 (February 22, 2015): 73–93. | en_US |
dc.contributor.department | Haystack Observatory | en_US |
dc.contributor.department | MIT Kavli Institute for Astrophysics and Space Research | en_US |
dc.contributor.mitauthor | Goeke, Robert F. | en_US |
dc.contributor.mitauthor | Morgan, Edward H. | en_US |
dc.contributor.mitauthor | Williams, Christopher Leigh | en_US |
dc.contributor.mitauthor | Hewitt, Jacqueline N. | en_US |
dc.contributor.mitauthor | Remillard, Ronald Alan | en_US |
dc.contributor.mitauthor | Kratzenberg, Eric W. | en_US |
dc.contributor.mitauthor | McWhirter, Stephen R. | en_US |
dc.contributor.mitauthor | Cappallo, Roger J. | en_US |
dc.contributor.mitauthor | Corey, Brian E. | en_US |
dc.contributor.mitauthor | Kincaid, Barton B. | en_US |
dc.contributor.mitauthor | Lonsdale, Colin John | en_US |
dc.contributor.mitauthor | Oberoi, Divya | en_US |
dc.contributor.mitauthor | Rogers, Alan E. E. | en_US |
dc.contributor.mitauthor | Salah, Joseph E. | en_US |
dc.contributor.mitauthor | Whitney, Alan R. | en_US |
dc.relation.journal | Experimental Astronomy | en_US |
dc.eprint.version | Author's final manuscript | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | 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. | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-4117-570X | |
dc.identifier.orcid | https://orcid.org/0000-0001-7130-208X | |
dc.identifier.orcid | https://orcid.org/0000-0003-1941-7458 | |
mit.license | OPEN_ACCESS_POLICY | en_US |
mit.metadata.status | Complete | |