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A digital-receiver for the MurchisonWidefield Array
- 作者:Thiagaraj Prabu (1)
K. S. Srivani (1) D. Anish Roshi (2) P. A. Kamini (1) S. Madhavi (1) David Emrich (6) Brian Crosse (6) Andrew J. Williams (6) Mark Waterson (23) (4) (6) Avinash A. Deshpande (1) N. Udaya Shankar (1) Ravi Subrahmanyan (1) (3) Frank H. Briggs (3) (4) Robert F. Goeke (5) Steven J. Tingay (3) (6) Melanie Johnston-Hollitt (14) Gopalakrishna M R (1) Edward H. Morgan (5) Joseph Pathikulangara (7) John D. Bunton (21) Grant Hampson (21) Christopher Williams (5) Stephen M. Ord (6) Randall B. Wayth (3) (6) Deepak Kumar (1) Miguel F. Morales (13) Ludi deSouza (12) (21) Eric Kratzenberg (11) D. Pallot (6) Russell McWhirter (11) Bryna J. Hazelton (13) Wayne Arcus (6) David G. Barnes (8) Gianni Bernardi (19) (20) (9) T. Booler (6) Judd D. Bowman (10) Roger J. Cappallo (11) Brian E. Corey (11) Lincoln J. Greenhill (9) David Herne (6) Jacqueline N. Hewitt (5) David L. Kaplan (15) Justin C. Kasper (22) (9) Barton B. Kincaid (11) Ronald Koenig (21) Colin J. Lonsdale (11) Mervyn J. Lynch (6) Daniel A. Mitchell (21) (3) Divya Oberoi (11) (16) Ronald A. Remillard (5) Alan E. Rogers (11) Joseph E. Salah (11) Robert J. Sault (17) Jamie B. Stevens (18) (21) S. Tremblay (3) (6) Rachel L. Webster (17) (3) Alan R. Whitney (11) Stuart B. Wyithe (17) (3)
1. Raman Research Institute (RRI) ; Bangalore ; India 2. National Radio Astronomy Observatory ; Green Bank ; USA 6. International Centre for Radio Astronomy Research - Curtin University ; Perth ; Australia 23. SKA Organisation ; Jodrell Bank Observatory ; Manchester ; UK 4. Australian National University (ANU) ; Canberra ; Australia 3. ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) ; Sydney ; Australia 5. MIT Kavli Institute ; Boston ; USA 14. Victoria University of Wellington ; Wellington ; New Zealand 7. CSIRO Computational Informatics ; Canberra ; Australia 21. CSIRO Astronomy and Space Science ; Canberran ; Australia 13. University of Washington-Seattle ; Seattle ; USA 12. University of Sydney ; Sydney ; Australia 11. MIT Haystack Observatory ; Westford ; USA 8. Swinburne University of Technology ; Melbourne ; Australia 19. Square Kilometre Array South Africa (SKA SA) ; Cape Town ; South Africa 20. Department of Physics and Electronics ; Rhodes University ; Grahamstown ; South Africa 9. Harvard-Smithsonian Center for Astrophysics ; Cambridge ; USA 10. Arizona State University ; Tempe ; USA 15. University of Wisconsin-Milwaukee ; Milwaukee ; USA 22. University of Michigan ; Ann Arbor ; USA 16. National Centre for Radio Astrophysics - TIFR ; Pune ; India 17. University of Melbourne ; Melbourne ; Australia 18. University of Tasmania ; Hobart ; Australia
- 关键词:ADC ; Channelizer ; Digital ; receiver ; FPGA ; MWA ; MRO ; PFB ; Radio astronomy instrumentation ; Radio telescope ; SKA
- 刊名:Experimental Astronomy
- 出版年:2015
- 出版时间:March 2015
- 年:2015
- 卷:39
- 期:1
- 页码:73-93
- 全文大小:1,547 KB
- 参考文献:1. Lonsdale et al.: The murchison widefield array: design overview. IEEE Proc. 97(8), 1497鈥?506 (2009)
2. Tingay et al.: The murchison widefield array: the square kilometre array precursor at low radio frequencies. Publ. Astron. Soc. Aust. 30 (2013). id.e007 21 pp 3. Bowman et al.: Science with the murchison widefield array. Publ. Astron. Soc. Aust. 30 (2013). id.e031 28 pp 4. Briggs, H.F.: MWA-LFD Receiver Node Subsystem, MWA knowledge tree (2007) 5. Bowman et al.: Field deployment of prototype antenna tiles for the mileura widefield array low frequency demonstrator. Astron. J. 133, 1505Y1518 (2007) 6. Beardsley et al.: A new layout optimization technique for interferometric arrays, applied to the MWA. Mon. Not. R. Astron. Soc. 425(3), 1781鈥?788 (2012) 7. Chikada, Y (1987) A very fast FFT spectrum analyzer for radio astronomy. Acoust., Speech, Signal Process., IEEE Int. Conf. ICASSP 鈥?6 11: pp. 2907-2910 CrossRef 8. Thompson, A.R., Moran, J.M., Swenson, Jr. G.W., Swenson, Jr. G.W.: Interferometry and Synthesis in Radio Astronomy 2nd Edition, ISBN: 978-0-471-25492-8 (2001) 9. Wu, C, Wicenec, A, Pallot, D, Checcucci, C (2013) Optimising NGAS for the MWA Archive. Exp. Astron. 36: pp. 679-694 CrossRef 10. Thompson, AR, Clark, BG, Granlund, J (1978) An Application of Walsh Functions in Radio Astronomy Instrumentation Electromagnetic Compatibility. IEEE Trans. EMC-20: pp. 451-453 11. Schneeweiss, H, Komlos, J, Ahmad, AS (2010) Symmetric and asymmetric rounding: a review and some new results. Adv. Stat. Anal. 94: pp. 247-271 CrossRef 12. Bellanger, MG, Bonnerot, G, Coudreuse, M (1976) Digital filtering by polyphase network: Application to sample-rate alteration and filter banks. IEEE Trans. Acoust., Speech Signal Process. 24: pp. 109-114 CrossRef 13. Vaidyanathan, PP (1990) Multirate digital filters, filter banks, polyphase networks, and applications: a tutorial. IEEE Proc. 78: pp. 56-93 CrossRef 14. Prabu et al.: A Full-band Voltage Beamforming mode for the Murchison Widefield Array Digital Receiver, MWSKY 2013 conference proceedings, ASI (submitted, 2014) 15. Bunton, JD (2004) SKA Correlator Advances. Exp. Astron. 17: pp. 251-259 CrossRef 16. Bernardi et al: A 189 MHz, 2400 square degree polarization survey with the Murchison Widefield Array 32-element prototype. Astrophys. J. 771(2) (2013). article id. 105, 16 pp 17. Bell et al.: A survey for transients and variables with the Murchison Widefield Array 32-tile prototype at 154 MHz. Mon. Not. R. Astron. Soc. 438(1), 352鈥?67 (2014) 18. Oberoi et al.: First Spectroscopic Imaging Observations of the Sun at Low Radio Frequencies with the Murchison Widefield Array Prototype. Astrophys. J. Lett. 728 (2) (2011). article id. L27 19. McKinley et al.: The giant lobes of Centaurus A observed at 118 MHz with the Murchison Widefield Array. Mon. Not. R. Astron. Soc. 436(2), 1286鈥?301 (2013) 20. McKinley et al.: Low frequency observations of the moon with the murchison widefield array. Astron. J. 145(1) (2013). article id. 23, 9 pp 21. Tingay et al.: The Murchison Widefield Array: solar science with the low frequency SKA Percursor. J. Phys.: Conf. Ser. 440(1) (2013). article id. 012033 22. Bhat et al.: The low-frequency characteristics of PSR J0437-4715 observed with the Murchison Widefield Array. Astrophys. J. Lett. 791(2) (2014). article id. L32, 6 pp. 23. Hindson et al.: The First Murchison Widefield Array low frequency radio observations of cluster scale non-thermal emission: the case of Abell 3667. Mon. Not. R. Astron. Soc. 445(1), 330鈥?46 (2014)
- 刊物类别:Physics and Astronomy
- 刊物主题:Physics
Astronomy Statistics for Engineering, Physics, Computer Science, Chemistry and Geosciences
- 出版者:Springer Netherlands
- ISSN:1572-9508
文摘
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.
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