Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Ung, Daniel"'
Autor:
Thekkeppattu, Jishnu N., McKinley, Benjamin, Trott, Cathryn M., Jones, Jake, Ung, Daniel C. X.
Global 21-cm experiments require exquisitely precise calibration of the measurement systems in order to separate the weak 21-cm signal from Galactic and extragalactic foregrounds as well as instrumental systematics. Hitherto, experiments aiming to ma
Externí odkaz:
http://arxiv.org/abs/2203.10466
Autor:
Sutinjo, Adrian T., McKinley, Benjamin, Belostotski, Leonid, Ung, Daniel C. X., Thekkeppattu, Jishnu N.
We present design equations for a two-element closely-spaced interferometer for measuring the noise temperature of a uniform sky. Such an interferometer is useful for observing highly diffuse radio sources such as the Milky Way and Cosmological signa
Externí odkaz:
http://arxiv.org/abs/2009.04643
We present the first survey of radio frequency interference (RFI) at the future site of the low frequency Square Kilometre Array (SKA), the Murchison Radio-astronomy Observatory (MRO), that both temporally and spatially resolves the RFI. The survey i
Externí odkaz:
http://arxiv.org/abs/2008.05918
Autor:
Borg, Josef, Magro, Alessio, Adami, Kristian Zarb, Acedo, Eloy de lera, Sutinjo, Adrian, Ung, Daniel
This paper deals with the calibration of the analogue chains of a Square Kilometre Array (SKA) phased aperture array station, using embedded element patterns (one per antenna in the array, thus accounting for the full effects of mutual coupling) or a
Externí odkaz:
http://arxiv.org/abs/2003.07306
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 only opera
Externí odkaz:
http://arxiv.org/abs/2003.05116
We present two methods for measuring the noise temperature of a differential input single-ended output (DISO) Low-Noise Amplifier (LNA) connected to an antenna. The first method is direct measurement of the DISO LNA and antenna in an anechoic chamber
Externí odkaz:
http://arxiv.org/abs/1806.10808
Autor:
Wayth, Randall, Sokolowski, Marcin, Booler, Tom, Crosse, Brian, Emrich, David, Grootjans, Robert, Hall, Peter J., Horsley, Luke, Juswardy, Budi, Kenney, David, Steele, Kim, Sutinjo, Adrian, Tingay, Steven J., Ung, Daniel, Walker, Mia, Williams, Andrew, Beardsley, A., Franzen, T. M. O., Johnston-Hollitt, M., Kaplan, D. L., Morales, M. F., Pallot, D., Trott, C. M., Wu, C.
We describe the design and performance of the Engineering Development Array (EDA), which is a low frequency radio telescope comprising 256 dual-polarisation dipole antennas working as a phased-array. The EDA was conceived of, developed, and deployed
Externí odkaz:
http://arxiv.org/abs/1707.03499
Autor:
Sutinjo, Adrian T., Ung, Daniel, Colegate, Tim M., Wayth, Randall B., Hall, Peter J., Acedo, Eloy de Lera
Radio interferometry most commonly involves antennas or antenna arrays of identical design. The identical antenna assumption leads to a convenient and useful mathematical simplification resulting in a scalar problem. An interesting variant to this is
Externí odkaz:
http://arxiv.org/abs/1705.08109
Autor:
Steiner, Rowanne1,2, Ung, Daniel C. X.1, Hubrechsen, Anouk2, Jones, Robert D.3, Wayth, Randall B.1, Bentum, Mark J.2, Smolders, A. Bart2
Publikováno v:
Applied Computational Electromagnetics Society Journal. Oct2020, Vol. 35 Issue 10, p1153-1160. 8p.
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