95 citations · 255 across the 11 of their papers we have counts for
6 papers · 1 filter
Engineering and Science Highlights of the KAT-7 Radio Telescope
A. R. Foley, T. Alberts, R P. Armstrong +100
The construction of the KAT-7 array in the Karoo region of the Northern Cape in South Africa was intended primarily as an engineering prototype for technologies and techniques appl…
MITEoR: A Scalable Interferometer for Precision 21 cm Cosmology
Haoxuan Zheng, Max Tegmark, Victor Buza +34
We report on the MIT Epoch of Reionization (MITEoR) experiment, a pathfinder low-frequency radio interferometer whose goal is to test technologies that improve the calibration prec…
Mapping our Universe in 3D with MITEoR
Haoxuan Zheng, Max Tegmark, Victor Buza +33
Mapping our universe in 3D by imaging the redshifted 21 cm line from neutral hydrogen has the potential to overtake the cosmic microwave background as our most powerful cosmologica…
All-Digital Wideband Space-Frequency Beamforming for the SKA Aperture Array
Vasily A. Khlebnikov, Kristian Zarb-Adami, Richard P. Armstrong +1
In this paper, we consider the problem of optimum multi-domain real-time beamforming and high-precision beam pattern positioning in application to very large wideband array antenna…
A Digital Broadband Beamforming Architecture for 2-PAD
R. Armstrong, J. Hickish, K. Zarb Adami +1
We describe an hierarchical, frequency-domain beamforming architecture for synthesising a sky beam from the wideband antenna feeds of digital aperture arrays. The development of de…
A Wideband, Four-Element, All-Digital Beamforming System for Dense Aperture Arrays in Radio Astronomy
Richard P. Armstrong, Kristian Zarb Adami, Mike E. Jones
Densely-packed, all-digital aperture arrays form a key area of technology development required for the Square Kilometre Array (SKA) radio telescope. The design of real-time signal…