Results 11 to 20 of about 35,861 (225)
Software and Techniques for VLBI Data Processing and Analysis
Universe, 2022 Very-long-baseline interferometry (VLBI) is a challenging observational technique, which requires in-depth knowledge about radio telescope instrumentation, interferometry, and the handling of noisy data.
Michael Janssen +2 more
doaj +1 more source
VLBI detection of an Infrared-Faint Radio Source [PDF]
, 2007 Infrared-Faint Radio Sources represent a new and unexpected class of object which is bright at radio wavelengths but unusually faint at infrared wavelengths.
Adam Deller +14 more
core +4 more sources
Pixelization and dynamic range in radio interferometry [PDF]
Astronomy & Astrophysics, 2008 This study investigates some of the consequences of representing the sky by a rectangular grid of pixels on the dynamic range of images derived from radio interferometric measurements. In particular, the effects of image pixelization coupled to the CLEAN deconvolution representation of the sky as a set of discrete delta functions can limit the dynamic ...
Cotton, W. D., Uson, Juan M.
openaire +2 more sources
The Astrophysical Journal, 2023 Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes in the dynamic spectra as a function of pulsar longitude were in the past interpreted as having spatially resolved ...
M. V. Popov +8 more
doaj +1 more source
Venus Express radio occultation observed by PRIDE [PDF]
, 2019 Context. Radio occultation is a technique used to study planetary atmospheres by means of the refraction and absorption of a spacecraft carrier signal through the atmosphere of the celestial body of interest, as detected from a ground station on Earth ...
Bocanegra-Bahamon, T. M. +20 more
core +4 more sources
Baseline-dependent averaging in radio interferometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 12 pages, 9 figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society ...
S J Wijnholds, A G Willis, S Salvini
openaire +2 more sources
Residual Entropy as a Diagnostic and Stopping Metric for CLEAN
The Astronomical Journal, 2023 We propose the use of entropy, measured from the spatial and flux distribution of pixels in the residual image, as a potential diagnostic and stopping metric for the CLEAN algorithm.
D. C. Homan, J. S. Roth, A. B. Pushkarev
doaj +1 more source
ANALYSIS OF DUAL-FREQUENCY INTERFEROMETRY APPLICABILITY FOR TARGET ELEVATION ANGLE MEASUREMENT USING TWO-COORDINATE RADARS [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. The study deals with the dual-frequency radio interferometry technique, which is based on the employment of two fairly close frequencies with the aim to remove ambiguity of the radar target elevation estimation using 2D-radar and ...
V. G. Galushko +2 more
doaj +1 more source
Bayesian source discrimination in radio interferometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Methods currently in use for locating and characterising sources in radio interferometry maps are designed for processing images, and require interferometric maps to be preprocessed so as to resemble conventional images. We demonstrate a Bayesian code - BaSC - that takes into account the interferometric visibility data despite working with more ...
P R Hague, H Ye, B Nikolic, S F Gull
openaire +3 more sources
On the RFI Detection in Differential Interferometric Synthetic Aperture Radar [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesSynthetic Aperture Radar (SAR) can image the ground with a wide area and high resolution at all times and in all weather and has become an important means of remote sensing.
Y. Liu, M. Tao, J. Li, T. Li, J. Chen
doaj +1 more source