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dc.contributor.authorOffringa, A. R.
dc.contributor.authorWayth, R. B.
dc.contributor.authorHurley-Walker, N.
dc.contributor.authorKaplan, D. L.
dc.contributor.authorBarry, N.
dc.contributor.authorBeardsley, A. P.
dc.contributor.authorBell, M. E.
dc.contributor.authorBernardi, G.
dc.contributor.authorBowman, J. D.
dc.contributor.authorBriggs, F.
dc.contributor.authorCallingham, J. R.
dc.contributor.authorCappallo, R. J.
dc.contributor.authorCarroll, P.
dc.contributor.authorDeshpande, A. A.
dc.contributor.authorDillon, J. S.
dc.contributor.authorDwarakanath, K. S.
dc.contributor.authorEwall-Wice, A.
dc.contributor.authorFeng, L.
dc.contributor.authorFor, B. -Q.
dc.contributor.authorGaensler, B. M.
dc.contributor.authorGreenhill, L. J.
dc.contributor.authorHancock, P.
dc.contributor.authorHazelton, B. J.
dc.contributor.authorHewitt, J. N.
dc.contributor.authorHindson, L.
dc.contributor.authorJacobs, D. C.
dc.contributor.authorJohnston-Hollitt, M.
dc.contributor.authorKapińska, A. D.
dc.contributor.authorKim, H. -S.
dc.contributor.authorKittiwisit, P.
dc.contributor.authorLenc, E.
dc.contributor.authorLine, J.
dc.contributor.authorLoeb, A.
dc.contributor.authorLonsdale, C. J.
dc.contributor.authorMcKinley, B.
dc.contributor.authorMcWhirter, S. R.
dc.contributor.authorMitchell, D. A.
dc.contributor.authorMorales, M. F.
dc.contributor.authorMorgan, E.
dc.contributor.authorMorgan, J.
dc.contributor.authorNeben, A. R.
dc.contributor.authorOberoi, D.
dc.contributor.authorOrd, S. M.
dc.contributor.authorPaul, S.
dc.contributor.authorPindor, B.
dc.contributor.authorPober, J. C.
dc.contributor.authorPrabu, T.
dc.contributor.authorProcopio, P.
dc.contributor.authorRiding, J.
dc.contributor.authorShankar, N. Udaya
dc.contributor.authorSethi, S.
dc.contributor.authorSrivani, K. S.
dc.contributor.authorStaveley-Smith, L.
dc.contributor.authorSubrahmanyan, R.
dc.contributor.authorSullivan, I. S.
dc.contributor.authorTegmark, M.
dc.contributor.authorThyagarajan, N.
dc.contributor.authorTingay, S. J.
dc.contributor.authorTrott, C. M.
dc.contributor.authorWebster, R. L.
dc.contributor.authorWilliams, A.
dc.contributor.authorWilliams, C. L.
dc.contributor.authorWu, C.
dc.contributor.authorWyithe, J. S.
dc.contributor.authorZheng, Q.
dc.date.accessioned2017-07-14T14:40:37Z
dc.date.available2017-07-14T14:40:37Z
dc.date.issued2015-01-16
dc.identifier.citationOffringa , A R , Wayth , R B , Hurley-Walker , N , Kaplan , D L , Barry , N , Beardsley , A P , Bell , M E , Bernardi , G , Bowman , J D , Briggs , F , Callingham , J R , Cappallo , R J , Carroll , P , Deshpande , A A , Dillon , J S , Dwarakanath , K S , Ewall-Wice , A , Feng , L , For , B -Q , Gaensler , B M , Greenhill , L J , Hancock , P , Hazelton , B J , Hewitt , J N , Hindson , L , Jacobs , D C , Johnston-Hollitt , M , Kapińska , A D , Kim , H -S , Kittiwisit , P , Lenc , E , Line , J , Loeb , A , Lonsdale , C J , McKinley , B , McWhirter , S R , Mitchell , D A , Morales , M F , Morgan , E , Morgan , J , Neben , A R , Oberoi , D , Ord , S M , Paul , S , Pindor , B , Pober , J C , Prabu , T , Procopio , P , Riding , J , Shankar , N U , Sethi , S , Srivani , K S , Staveley-Smith , L , Subrahmanyan , R , Sullivan , I S , Tegmark , M , Thyagarajan , N , Tingay , S J , Trott , C M , Webster , R L , Williams , A , Williams , C L , Wu , C , Wyithe , J S & Zheng , Q 2015 , ' The low-frequency environment of the Murchison Widefield Array : radio-frequency interference analysis and mitigation ' , Publications of the Astronomical Society of Australia , vol. 32 , e008 . https://doi.org/10.1017/pasa.2015.7
dc.identifier.issn1323-3580
dc.identifier.otherPURE: 10665438
dc.identifier.otherPURE UUID: 835c968b-bc0d-4cb5-8f53-b6e8570a008b
dc.identifier.otherArXiv: http://arxiv.org/abs/1501.03946v1
dc.identifier.otherScopus: 84936755589
dc.identifier.urihttp://hdl.handle.net/2299/18954
dc.descriptionThis is the Accepted Manuscript version of the following article: A. R. Offringa, et al., “The low-frequency environment of the Murchison Widefield Array: radio-frequency interference analysis and mitigation”, Publications of the Astronomical Society of Australia, Vol. 32, March 2015. The final published version is available at: https://doi.org/10.1017/pasa.2015.7 © Astronomical Society of Australia 2015
dc.description.abstractThe Murchison Widefield Array (MWA) is a new low-frequency interferometric radio telescope built in Western Australia at one of the locations of the future Square Kilometre Array (SKA). We describe the automated radio-frequency interference (RFI) detection strategy implemented for the MWA, which is based on the AOFlagger platform, and present 72-231-MHz RFI statistics from 10 observing nights. RFI detection removes 1.1% of the data. RFI from digital TV (DTV) is observed 3% of the time due to occasional ionospheric or atmospheric propagation. After RFI detection and excision, almost all data can be calibrated and imaged without further RFI mitigation efforts, including observations within the FM and DTV bands. The results are compared to a previously published Low-Frequency Array (LOFAR) RFI survey. The remote location of the MWA results in a substantially cleaner RFI environment compared to LOFAR's radio environment, but adequate detection of RFI is still required before data can be analysed. We include specific recommendations designed to make the SKA more robust to RFI, including: the availability of sufficient computing power for RFI detection; accounting for RFI in the receiver design; a smooth band-pass response; and the capability of RFI detection at high time and frequency resolution (second and kHz-scale respectively).en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofPublications of the Astronomical Society of Australia
dc.rightsOpen
dc.subjectastro-ph.IM
dc.titleThe low-frequency environment of the Murchison Widefield Array : radio-frequency interference analysis and mitigationen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2015-01-16
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1017/pasa.2015.7
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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