Related papers: MWA Tied-Array Processing IV: A Multi-Pixel Beamfo…

Tied-array beam flatfielding

Context. Multi-element phased-array radio telescopes use digital beamforming to widen their field-of-view with numerous tied-array beams (TABs). These beams share bandpass variations and radio frequency interference (RFI). Yet, most pulsar…

Instrumentation and Methods for Astrophysics · Physics 2026-03-16 Dirk Kuiper , Cees Bassa , Ziggy Pleunis , Jason Hessels

Ionospheric Modelling using GPS to Calibrate the MWA. II: Regional ionospheric modelling using GPS and GLONASS to estimate ionospheric gradients

We estimate spatial gradients in the ionosphere using the Global Positioning System (GPS) and GLONASS (Russian global navigation system) observations, utilising data from multiple GPS stations in the vicinity of Murchison Radio-astronomy…

Instrumentation and Methods for Astrophysics · Physics 2016-07-20 B. S. Arora , J. Morgan , S. M. Ord , S. J. Tingay , M. Bell , J. R. Callingham , K. S. Dwarakanath , B. -Q. For , P. Hancock , L. Hindson , N. Hurley-Walker , M. Johnston-Hollitt , A. D. Kapinska , E. Lenc , B. McKinley , A. R. Offringa , P. Procopio , L. Staveley-Smith , R. B. Wayth , C. Wu , Q. Zheng

A new layout optimization technique for interferometric arrays, applied to the MWA

Antenna layout is an important design consideration for radio interferometers because it determines the quality of the snapshot point spread function (PSF, or array beam). This is particularly true for experiments targeting the 21 cm Epoch…

Instrumentation and Methods for Astrophysics · Physics 2015-06-04 A. P. Beardsley , B. J. Hazelton , M. F. Morales , R. C. Cappallo , R. Goeke , D. Emrich , C. J. Lonsdale , W. Arcus , D. Barnes , G. Bernardi , J. D. Bowman , J. D. Bunton , B. E. Corey , A. Deshpande , L. deSouza , B. M. Gaensler , L. J. Greenhill , D. Herne , J. N. Hewitt , D. L. Kaplan , J. C. Kasper , B. B. Kincaid , R. Koeing , E. Kratzenberg , M. J. Lynch , S. R. McWhirter , D. A. Mitchell , E. Morgan , D. Oberoi , S. M. Ord , J. Pathikulangara , T. Prabu , R. A. Remillard , A. E. E. Rogers , A. Roshi , J. E. Salah , R. J. Sault , N. Uday Shankar , K. S. Srivani , J. Stevens , R. Subrahmanyan , S. J. Tingay , R. B. Wayth , M. Waterson , R. L. Webster , A. R. Whitney , A. Williams , C. L. Williams , J. S. B. Wyithe

Calibration database for the Murchison Widefield Array All-Sky Virtual Observatory

We present a calibration component for the Murchison Widefield Array All-Sky Virtual Observatory (MWA ASVO) utilising a newly developed PostgreSQL database of calibration solutions. Since its inauguration in 2013, the MWA has recorded over…

Instrumentation and Methods for Astrophysics · Physics 2020-06-17 M. Sokolowski , C. H. Jordan , G. Sleap , A. Williams , R. B. Wayth , M. Walker , D. Pallot , A. Offringa , N. Hurley-Walker , T. M. O. Franzen , M. Johnston-Hollitt , D. L. Kaplan , D. Kenney , S. J. Tingay

Separating Nightside Interplanetary and Ionospheric Scintillation with LOFAR

Observation of interplanetary scintillation (IPS) beyond Earth-orbit can be challenging due to the necessity to use low radio frequencies at which scintillation due to the ionosphere could confuse the interplanetary contribution. A recent…

Instrumentation and Methods for Astrophysics · Physics 2016-09-07 R. A. Fallows , M. M. Bisi , B. Forte , Th. Ulich , A. A. Konovalenko , G. Mann , C. Vocks

Near-Field Millimeter-Wave Imaging via Circular-Arc MIMO Arrays

Millimeter-wave (MMW) imaging has a wide prospect in application of concealed weapons detection. We propose a circular-arc multiple-input multiple-output (MIMO) array scheme with uniformly spaced transmit and receive antennas along the…

Signal Processing · Electrical Eng. & Systems 2021-03-01 Shiyong Li , Shuoguang Wang , Guoqiang Zhao , Houjun Sun

MA-Aided Hierarchical Hybrid Beamforming for Multi-User Wideband Beam Squint Mitigation

In wideband near-field arrays, frequency-dependent array responses cause wavefronts at different frequencies to deviate from that at the center frequency, producing beam squint and degrading multi-user performance. True-time-delay (TTD)…

Signal Processing · Electrical Eng. & Systems 2025-11-12 Cixiao Zhang , Yin Xu , Xinghao Guo , Xiaowu Ou , Dazhi He , Wenjun Zhang

Vision-Position Multi-Modal Beam Prediction Using Real Millimeter Wave Datasets

Enabling highly-mobile millimeter wave (mmWave) and terahertz (THz) wireless communication applications requires overcoming the critical challenges associated with the large antenna arrays deployed at these systems. In particular, adjusting…

Signal Processing · Electrical Eng. & Systems 2021-11-16 Gouranga Charan , Tawfik Osman , Andrew Hredzak , Ngwe Thawdar , Ahmed Alkhateeb

A Multi-Beam Radio Transient Detector With Real-Time De-Dispersion Over a Wide DM Range

Isolated, short dispersed pulses of radio emission of unknown origin have been reported and there is strong interest in wide-field, sensitive searches for such events. To achieve high sensitivity, large collecting area is needed and…

Instrumentation and Methods for Astrophysics · Physics 2014-03-12 Nathan Clarke , Larry D'Addario , Robert Navarro , Joseph Trinh

The Murchison Widefield Array

It is shown that the excellent Murchison Radio-astronomy Observatory site allows the Murchison Widefield Array to employ a simple RFI blanking scheme and still calibrate visibilities and form images in the FM radio band. The techniques…

Instrumentation and Methods for Astrophysics · Physics 2010-08-17 Daniel A. Mitchell , Lincoln J. Greenhill , Stephen M. Ord , Gianni Bernardi , Randall B. Wayth , Richard G. Edgar , Michael A. Clark , Kevin Dal , Hanspeter Pfister , Stewart J. Gleadow , W. Arcus , F. H. Briggs , L. Benkevitch , J. D. Bowman , J. D. Bunton , S. Burns , R. J. Cappallo , B. E. Corey , A. de Oliveira-Costa , L. Desouza , S. S. Doeleman , M. F. Derome , D. Emrich , M. Glossop , R. Goeke , M. R. Gopala Krishna , B. Hazelton , D. E. Herne , J. N. Hewitt , P. A. Kamini , D. L. Kaplan , J. C. Kasper , B. B. Kincaid , J. Kocz , E. Kowald , E. Kratzenberg , D. Kumar , C. J. Lonsdale , M. J. Lynch , S. Madhavi , M. Matejek , S. R. McWhirter , M. F. Morales , E. Morgan , D. Oberoi , J. Pathikulangara , T. Prabu , A. Rogers , J. E. Salah , R. J. Sault , N. Udaya Shankar , K. S. Srivani , J. Stevens , S. J. Tingay , A. Vaccarella , M. Waterson , R. L. Webster , A. R. Whitney , A. Williams , C. Williams

On the feasibility of beamforming in millimeter wave communication systems with multiple antenna arrays

The use of the millimeter (mm) wave spectrum for next generation (5G) mobile communication has gained significant attention recently. The small carrier wavelengths at mmwave frequencies enable synthesis of compact antenna arrays, providing…

Information Theory · Computer Science 2014-10-22 Jaspreet Singh , Sudhir Ramakrishna

A candidate field for deep imaging of the Epoch of Reionization observed with MWA

Deep imaging of structures from the Cosmic Dawn (CD) and the Epoch of Reionization (EoR) in five targeted fields is one of the highest priority scientific objectives for the Square Kilometre Array (SKA). Selecting 'quiet' fields, which…

Instrumentation and Methods for Astrophysics · Physics 2025-07-14 Xueying Zhang , Qian Zheng , Linhui Wu , Quan Guo , Stefan W. Duchesne , Mengfan He , Huanyuan Shan , Xiang-ping Wu , Melanie Johnston-Hollitt , Feiyu Zhao , Qingyuan Ma

Noise Temperature of Phased Array Radio Telescope: The Murchison Widefield Array and the Engineering Development Array

This paper presents a framework to compute the receiver noise temperature (Trcv) of two low-frequency radio telescopes, the Murchison Widefield Array (MWA) and the Engineering Development Array (EDA). The MWA was selected because it is the…

Instrumentation and Methods for Astrophysics · Physics 2020-03-23 Daniel C. X. Ung , Marcin Sokolowski , Adrian T. Sutinjo , David B. Davidson

Tensor-based Multi-dimensional Wideband Channel Estimation for mmWave Hybrid Cylindrical Arrays

Channel estimation is challenging for hybrid millimeter wave (mmWave) large-scale antenna arrays which are promising in 5G/B5G applications. The challenges are associated with angular resolution losses resulting from hybrid front-ends, beam…

Signal Processing · Electrical Eng. & Systems 2020-09-11 Zhipeng Lin , Tiejun Lv , Wei Ni , J. Andrew Zhang , Ren Ping Liu

Murchison Widefield Array Limits on Radio Emission from ANTARES Neutrino Events

We present a search, using the Murchison Widefield Array (MWA), for electromagnetic counterparts to two candidate high energy neutrino events detected by the ANTARES neutrino telescope in 2013 November and 2014 March. These events were…

High Energy Astrophysical Phenomena · Physics 2016-04-06 S. Croft , D. L. Kaplan , S. J. Tingay , T. Murphy , M. E. Bell , A. Rowlinson , S. Adrian-Martinez , M. Ageron , A. Albert , M. Andre , G. Anton , M. Ardid , J. -J. Aubert , T. Avgitas , B. Baret , J. Barrios-Marti , S. Basa , V. Bertin , S. Biagi , R. Bormuth , M. C. Bouwhuis , R. Bruijn , J. Brunner , J. Busto , A. Capone , L. Caramete , J. Carr , T. Chiarusi , M. Circella , A. Coleiro , R. Coniglione , H. Costantini , P. Coyle , A. Creusot , I. Dekeyser , A. Deschamps , G. De Bonis , C. Distefano , C. Donzaud , D. Dornic , D. Drouhin , T. Eberl , I. El Bojaddaini , D. Elsasser , A. Enzenhofer , K. Fehn , I. Felis , P. Fermani , L. A. Fusco , S. Galata , P. Gay , S. Geisselsoder , K. Geyer , V. Giordano , A. Gleixner , H. Glotin , R. Gracia-Ruiz , K. Graf , S. Hallmann , H. van Haren , A. J. Heijboer , Y. Hello , J. J. Hernandez-Rey , J. Hossl , J. Hofestadt , C. Hugon , C. W James , M. de Jong , M. Kadler , O. Kalekin , U. Katz , D. Kiessling , P. Kooijman , A. Kouchner , M. Kreter , I. Kreykenbohm , V. Kulikovskiy , C. Lachaud , R. Lahmann , D. Lefevre , E. Leonora , S. Loucatos , M. Marcelin , A. Margiotta , A. Marinelli , J. A. Martinez-Mora , A. Mathieu , T. Michael , P. Migliozzi , A. Moussa , C. Mueller , E. Nezri , G. E. Pavalas , C. Pellegrino , C. Perrina , P. Piattelli , V. Popa , T. Pradier , C. Racca , G. Riccobene , K. Roensch , M. Saldana , D. F. E. Samtleben , A. Sanchez-Losa , M. Sanguineti , P. Sapienza , J. Schmid , J. Schnabel , F. Schussler , T. Seitz , C. Sieger , M. Spurio , J. J. M. Steijger , T. Stolarczyk , M. Taiuti , C. Tamburini , A. Trovato , M. Tselengidou , D. Turpin , C. Tonnis , B. Vallage , C. Vallee , V. Van Elewyck , E. Visser , D. Vivolo , S. Wagner , J. Wilms , J. D. Zornoza , J. Zuniga , A. Klotz , M. Boer , A. Le Van Suu , C. Akerlof , W. Zheng

Near-Field Millimeter-Wave Imaging via Arrays in the Shape of Polyline

This paper proposes a polyline shaped array based system scheme, associated with mechanical scanning along the perpendicular direction of the array, for near-field millimeter-wave (MMW) imaging. Each section of the polyline is a chord of a…

Signal Processing · Electrical Eng. & Systems 2021-09-08 Shuoguang Wang , Shiyong Li , Guoqiang Zhao , Houjun Sun

GLEAM: The GaLactic and Extragalactic All-sky MWA survey

GLEAM, the GaLactic and Extragalactic All-sky MWA survey, is a survey of the entire radio sky south of declination +25 deg at frequencies between 72 and 231 MHz, made with the Murchison Widefield Array (MWA) using a drift scan method that…

Instrumentation and Methods for Astrophysics · Physics 2017-08-23 R. B. Wayth , E. Lenc , M. E. Bell , J. R. Callingham , K. S. Dwarakanath , T. M. O. Franzen , B. -Q. For , B. Gaensler , P. Hancock , L. Hindson , N. Hurley-Walker , C. A. Jackson , M. Johnston-Hollitt , A. D. Kapinska , B. McKinley , J. Morgan , A. R. Offringa , P. Procopio , L. Staveley-Smith , C. Wu , Q. Zheng , C. M. Trott , G. Bernardi , J. D. Bowman , F. Briggs , R. J. Cappallo , B. E. Corey , A. A. Deshpande , D. Emrich , R. Goeke , L. J. Greenhill , B. J. Hazelton , D. L. Kaplan , J. C. Kasper , E. Kratzenberg , C. J. Lonsdale , M. J. Lynch , S. R. McWhirter , D. A. Mitchell , M. F. Morales , E. Morgan , D. Oberoi , S. M. Ord , T. Prabu , A. E. E. Rogers , A. Roshi , N. Udaya Shankar , K. S. Srivani , R. Subrahmanyan , S. J. Tingay , M. Waterson , R. L. Webster , A. R. Whitney , A. Williams , C. L. Williams

A Serendipitous MWA Search for Narrow-band and Broad-band Low Frequency Radio Transmissions from 1I/2017 U1 'Oumuamua

We examine data from the Murchison Widefield Array (MWA) in the frequency range 72 -- 102 MHz for a field-of-view that serendipitously contained the interstellar object 'Oumuamua on 2017 November 28. Observations took place with time…

Instrumentation and Methods for Astrophysics · Physics 2018-05-16 S. J. Tingay , D. L. Kaplan , E. Lenc , S. Croft , B. McKinley , A. Beardsley , B. Crosse , D. Emrich , T. M. O. Franzen , B. M. Gaensler , L. Horsley , M. Johnston-Hollitt , D. Kenney , M. F. Morales , D. Pallot , K. Steele , C. M. Trott , M. Walker , R. B. Wayth , A. Williams , C. Wu

The precision and accuracy of early Epoch of Reionization foreground models: comparing MWA and PAPER 32-antenna source catalogs

As observations of the Epoch of Reionization (EoR) in redshifted 21cm emission begin, we asses the accuracy of the early catalog results from the Precision Array for Probing the Epoch of Reionization (PAPER) and the Murchison Widefield…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Daniel Jacobs , Judd Bowman , James Aguirre

A First Look for Molecules between 103 and 133 MHz using the Murchison Widefield Array

We detail and present results from a pilot study to assess the feasibility of detecting molecular lines at low radio frequencies. We observed a 400 square degree region centred on the Galactic Centre with the Murchison Widefield Array (MWA)…

Astrophysics of Galaxies · Physics 2017-07-20 Chenoa Tremblay , Natasha Hurley-Walker , Maria Cunningham , Paul A. Jones , Paul J. Hancock , Randall Wayth , Christopher H. Jordan