1.3k citations · 7.6k across the 94 of their papers we have counts for
7 papers · 1 filter
Subtraction of point sources from interferometric radio images through an algebraic forward modeling scheme
G. Bernardi, D. A. Mitchell, S. M. Ord +4
We present a method for subtracting point sources from interferometric radio images via forward modeling of the instrument response and involving an algebraic nonlinear minimizatio…
Interferometric imaging with the 32 element Murchison Wide-field Array
S. M. Ord, D. A. Mitchell, R. B. Wayth +56
The Murchison Wide-field Array (MWA) is a low frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of re-ionisation (…
The Murchison Widefield Array
Daniel A. Mitchell, Lincoln J. Greenhill, Stephen M. Ord +57
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 visibiliti…
Subtraction of Bright Point Sources from Synthesis Images of the Epoch of Reionization
B. Pindor, J. S. B. Wyithe, D. A. Mitchell +3
Bright point sources associated with extragalactic AGN and radio galaxies are an important foreground for low frequency radio experiments aimed at detecting the redshifted 21cm emi…
Alternative Adaptive Filter Structures for Improved Radio Frequency Interference Cancellation in Radio Astronomy
D. A. Mitchell, J. G. Robertson, R. J. Sault
In radio astronomy, reference signals from auxiliary antennas that receive only the radio frequency interference (RFI) can be modified to model the RFI environment at the astronomy…
Reference antenna techniques for canceling radio frequency interference due to moving sources
D. A. Mitchell, J. G. Robertson
We investigate characteristics of radio frequency interference (RFI) signals that can affect the excision potential of some interference mitigation algorithms. The techniques consi…