Results 1 to 10 of about 4,973 (237)
The ionosphere and radio interferometry
Annals of Geophysics, 1997 This paper reviews the effects of the ionosphere on radio astronomjcal observations, what we can learn about the ionosphere from radio interferometry, and a procedure to correct for these effects.
T. A. Th. Spoelstra
doaj +5 more sources
White Rabbit in radio interferometry. [PDF]
Exp Astron (Dordr)Abstract Radio interferometry relies on distributed telescopes having precise time and frequency sources that allow them to operate coherently over timescales up to several hours. As radio telescopes are being connected to fiber-based high-speed communication networks, it is of interest to make use of these for time and frequency ...
Boven EP +5 more
europepmc +6 more sources
Time resolution of cosmic noise observations with acorrelation experiment [PDF]
Annales Geophysicae, 2004 A radio wave correlation experiment using a Mills Cross technique can be used to observe the cosmic noise intensity from the ground for the purpose of determining the absorption in the ionosphere.
E. Nielsen, F. Honary, M. Grill
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Interferometry and Synthesis in Radio Astronomy [PDF]
, 2001 astronomy; physics; communications; radio ...
Thompson, A. Richard +2 more
openaire +6 more sources
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 +4 more sources
Advances in Calibration and Imaging Techniques in Radio Interferometry [PDF]
Proceedings of the IEEE, 2009 This paper summarizes some of the major calibration and image reconstruction techniques used in radio interferometry and describes them in a common mathematical framework. The use of this framework has a number of benefits, ranging from clarification of the fundamentals, use of standard numerical optimization techniques, and generalization or ...
Urvashi Rau, Sanjay Bhatnagar
exaly +3 more sources
Efficient Range Estimation in Beat Radio Interferometry
IEEE Access, 2017 The beat radio interferometry (BRI) is a novel ranging scheme that achieves high accuracy with low-cost devices. A major problem with BRI is the lack of an efficient range estimation method that is valid in general measurement configurations and ...
Bing Xu, Wangdong Qi, Li Wei, Su Zhang
doaj +2 more sources
The Potsdam Open Source Radio Interferometry Tool (PORT) [PDF]
Publications of the Astronomical Society of the Pacific, 2021 Abstract The Potsdam Open Source Radio Interferometry Tool (PORT) is the very long baseline interferometry (VLBI) analysis software developed and maintained at the GFZ German Research Centre for Geosciences. Chiefly, PORT is tasked with the timely processing of VLBI sessions and post-processing activities supporting the generation of ...
Schuh, H. +20 more
openaire +9 more sources
Golden spiral interferometry for radio astronomy. A proposal
Journal of InstrumentationAbstract Radio interferometry is a powerful technique that allows astronomers to create high-resolution images of astronomical objects. The distribution of radio telescopes in an interferometer is a critical factor that determines the resolution and sensitivity of the instrument.
Rodriguez, Elio Quiroga
openaire +3 more sources
Demonstrating the Principles of Aperture Synthesis with Table- Top Laboratory Exercises [PDF]
EPJ Web of Conferences, 2019 Many undergraduate radio astronomy courses are unable to give a detailed treatment of aperture synthesis due to time constraints and limited math backgrounds of students.
Marr J.M. +6 more
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