A digital-receiver for the Murchison Widefield Array

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...

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Main Authors:	Prabu, T., Srivani, K., Roshi, D., Kamini, P., Madhavi, S., Emrich, D., Crosse, B., Williams, A., Waterson, M., Deshpande, A., Shankar, N., Subrahmanyan, R., Briggs, F., Goeke, R., Tingay, Steven, Johnston-Hollitt, M., R, G., Morgan, E., Pathikulangara, J., Bunton, J., Hampson, G., Williams, C., Ord, Stephen, Wayth, Randall, Kumar, D., Morales, M., DeSouza, L., Kratzenberg, E., Pallot, D., McWhirter, R., Hazelton, B., Arcus, W., Barnes, D., Bernardi, G., Booler, T., Bowman, J., Cappallo, R., Corey, B., Greenhill, L., Herne, D., Hewitt, J., Kaplan, D., Kasper, J., Kincaid, B., Koenig, R., Lonsdale, C., Lynch, Mervyn, Mitchell, D., Oberoi, D., Remillard, R., Rogers, A., Salah, J., Sault, R., Stevens, J., Tremblay, S., Webster, R., Whitney, A., Wyithe, S.
Format:	Journal Article
Published:	Kluwer Academic Publishers 2015
Online Access:	http://hdl.handle.net/20.500.11937/37271

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author	Prabu, T. Srivani, K. Roshi, D. Kamini, P. Madhavi, S. Emrich, D. Crosse, B. Williams, A. Waterson, M. Deshpande, A. Shankar, N. Subrahmanyan, R. Briggs, F. Goeke, R. Tingay, Steven Johnston-Hollitt, M. R, G. Morgan, E. Pathikulangara, J. Bunton, J. Hampson, G. Williams, C. Ord, Stephen Wayth, Randall Kumar, D. Morales, M. DeSouza, L. Kratzenberg, E. Pallot, D. McWhirter, R. Hazelton, B. Arcus, W. Barnes, D. Bernardi, G. Booler, T. Bowman, J. Cappallo, R. Corey, B. Greenhill, L. Herne, D. Hewitt, J. Kaplan, D. Kasper, J. Kincaid, B. Koenig, R. Lonsdale, C. Lynch, Mervyn Mitchell, D. Oberoi, D. Remillard, R. Rogers, A. Salah, J. Sault, R. Stevens, J. Tremblay, S. Webster, R. Whitney, A. Wyithe, S.
author_facet	Prabu, T. Srivani, K. Roshi, D. Kamini, P. Madhavi, S. Emrich, D. Crosse, B. Williams, A. Waterson, M. Deshpande, A. Shankar, N. Subrahmanyan, R. Briggs, F. Goeke, R. Tingay, Steven Johnston-Hollitt, M. R, G. Morgan, E. Pathikulangara, J. Bunton, J. Hampson, G. Williams, C. Ord, Stephen Wayth, Randall Kumar, D. Morales, M. DeSouza, L. Kratzenberg, E. Pallot, D. McWhirter, R. Hazelton, B. Arcus, W. Barnes, D. Bernardi, G. Booler, T. Bowman, J. Cappallo, R. Corey, B. Greenhill, L. Herne, D. Hewitt, J. Kaplan, D. Kasper, J. Kincaid, B. Koenig, R. Lonsdale, C. Lynch, Mervyn Mitchell, D. Oberoi, D. Remillard, R. Rogers, A. Salah, J. Sault, R. Stevens, J. Tremblay, S. Webster, R. Whitney, A. Wyithe, S.
author_sort	Prabu, T.
building	Curtin Institutional Repository
collection	Online Access
description	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.
first_indexed	2025-11-14T08:49:21Z
format	Journal Article
id	curtin-20.500.11937-37271
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T08:49:21Z
publishDate	2015
publisher	Kluwer Academic Publishers
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-372712019-02-19T05:35:06Z A digital-receiver for the Murchison Widefield Array Prabu, T. Srivani, K. Roshi, D. Kamini, P. Madhavi, S. Emrich, D. Crosse, B. Williams, A. Waterson, M. Deshpande, A. Shankar, N. Subrahmanyan, R. Briggs, F. Goeke, R. Tingay, Steven Johnston-Hollitt, M. R, G. Morgan, E. Pathikulangara, J. Bunton, J. Hampson, G. Williams, C. Ord, Stephen Wayth, Randall Kumar, D. Morales, M. DeSouza, L. Kratzenberg, E. Pallot, D. McWhirter, R. Hazelton, B. Arcus, W. Barnes, D. Bernardi, G. Booler, T. Bowman, J. Cappallo, R. Corey, B. Greenhill, L. Herne, D. Hewitt, J. Kaplan, D. Kasper, J. Kincaid, B. Koenig, R. Lonsdale, C. Lynch, Mervyn Mitchell, D. Oberoi, D. Remillard, R. Rogers, A. Salah, J. Sault, R. Stevens, J. Tremblay, S. Webster, R. Whitney, A. Wyithe, S. 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. 2015 Journal Article http://hdl.handle.net/20.500.11937/37271 10.1007/s10686-015-9444-3 Kluwer Academic Publishers fulltext
spellingShingle	Prabu, T. Srivani, K. Roshi, D. Kamini, P. Madhavi, S. Emrich, D. Crosse, B. Williams, A. Waterson, M. Deshpande, A. Shankar, N. Subrahmanyan, R. Briggs, F. Goeke, R. Tingay, Steven Johnston-Hollitt, M. R, G. Morgan, E. Pathikulangara, J. Bunton, J. Hampson, G. Williams, C. Ord, Stephen Wayth, Randall Kumar, D. Morales, M. DeSouza, L. Kratzenberg, E. Pallot, D. McWhirter, R. Hazelton, B. Arcus, W. Barnes, D. Bernardi, G. Booler, T. Bowman, J. Cappallo, R. Corey, B. Greenhill, L. Herne, D. Hewitt, J. Kaplan, D. Kasper, J. Kincaid, B. Koenig, R. Lonsdale, C. Lynch, Mervyn Mitchell, D. Oberoi, D. Remillard, R. Rogers, A. Salah, J. Sault, R. Stevens, J. Tremblay, S. Webster, R. Whitney, A. Wyithe, S. A digital-receiver for the Murchison Widefield Array
title	A digital-receiver for the Murchison Widefield Array
title_full	A digital-receiver for the Murchison Widefield Array
title_fullStr	A digital-receiver for the Murchison Widefield Array
title_full_unstemmed	A digital-receiver for the Murchison Widefield Array
title_short	A digital-receiver for the Murchison Widefield Array
title_sort	digital-receiver for the murchison widefield array
url	http://hdl.handle.net/20.500.11937/37271

A digital-receiver for the Murchison Widefield Array

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