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A multiple-beam CLEAN for imaging intra-day variable radio sources
Methods: data analysis – Techniques: image processing – Radio continuum: general
2011/10/13
The CLEAN algorithm, widely used in radio interferometry for the deconvolution of radio images, performs well only if the raw radio image (dirty image) is, to good approximation, a simple convolution ...
We present a one-port calibration technique for characterization of beam waveguide components with a vector network analyzer. This technique involves using a set of known delays to separate the respon...
Primary Beam Shape Calibration from Mosaicked, Interferometric Observations
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2010/12/24
Image quality in mosaicked observations from interferometric radio telescopes is strongly dependent on the accuracy with which the antenna primary beam is calibrated. The next generation of radio tele...
Analysis of beam plasma instability effects on incoherent scatter spectra
Ionosphere plasma
2017/3/22
Naturally Enhanced Ion Acoustic Lines (NEIALs)
detected with Incoherent Scatter Radars (ISRs) can be produced
by a Langmuir decay mechanism, triggered by a bump
on tail instability. A recent model ...