Results 31 to 40 of about 870,817 (352)

A Design Study of 100GHz Band Local Oscillator System by Using Yig Oscillator [PDF]

Journal of Astronomy and Space Sciences, 2003
In this paper, we make a design study for a local oscillator system of the 100 GHz band cosmic radio receiving system. We use the YIG oscillator with digital driver which is the main oscillator. This oscillator has a good frequency and phase stability at
Changhoon Lee, K. D. Kim, H. R. Kim, M. H. Jung, S. T. Han, D. H. Jae, T. S. Kim   +6 more
doaj   +1 more source

The Measurement of Polarization in Radio Astronomy [PDF]

The WSPC Handbook of Astronomical Instrumentation, 2018
Modern dual-polarization receivers allow a radio telescope to characterize the full polarization state of incoming insterstellar radio waves. Many astronomers incorrectly consider a polarimeter to be the "backend" of the telescope.
T. Robishaw, C. Heiles
semanticscholar   +1 more source

Industrial interference and radio astronomy [PDF]

Advances in Radio Science, 2013
The interferer – victim scenario is described for the case of industrial interference affecting radio astronomical observatories. The sensitivity of radio astronomical receivers and their interference limits are outlined.
A. Jessner
doaj   +1 more source

THE UNIVERSE RADIO EMISSION AT DECAMETER WAVELENGTHS (by the materials of a series of works awarded by the State Prize of Ukraine in the field of science and technology in 2018)

Radio Physics and Radio Astronomy, 2019
Purpose: The abstract presentation and review of the works of the last 40 years in the field of low-frequency radio astronomy and a summary of their main scientific and technical results, which have been awarded the State Prize of Ukraine in the field of
O. O. Konovalenko, V. V. Zakharenko, M. M. Kalinichenko, V. M. Melnik, M. A. Sidorchuk, A. A. Stanislavsky, S. V. Stepkin, O. M. Ulyanov   +7 more
doaj   +1 more source

Polygon “Simeiz-Katsively” - fluctuations in the local deformations and insolation the Earth's surface [PDF]

ITM Web of Conferences, 2019
Discovered the effects of regular solar and geodynamic fluctuations in satellite data on the insolation falling on the earth's surface at the point of the Kara-Dag for the period 1983.5 in 2005.5 years.
Volvach Larisa, Kurbasova Galina, Dmytrotsa Andrej, Neyachenko Dmitry   +3 more
doaj   +1 more source

Extragalactic radio continuum surveys and the transformation of radio astronomy [PDF]

, 2017
Next-generation radio surveys are about to transform radio astronomy by discovering and studying tens of millions of previously unknown radio sources. These surveys will provide fresh insights for understanding the evolution of galaxies, measuring the ...
R. Norris
semanticscholar   +1 more source

TRACKING TYPE III RADIO BURST SOURCES IN THE SOLAR CORONA BY HELIOGRAPHIC MEANS

Odessa Astronomical Publications, 2014
We present the preliminary results of heliographic measurements of solar  type  III  radio  bursts  in  the lowfrequency range (16.5-33 MHz) using  the UTR-2  radio heliograph.
A. A. Koval, A. A. Stanislavsky, A. A. Konovalenko, Ya. S. Volvach   +3 more
doaj   +1 more source

A Decade of Developing Radio-Astronomy Instrumentation using CASPER Open-Source Technology [PDF]

, 2016
The Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) has been working for a decade to reduce the time and cost of designing, building and deploying new digital radio-astronomy instruments.
J. Hickish, Z. Abdurashidova, Z. Ali, K. Buch, Sandeep C. Chaudhari, Hong Chen, M. Dexter, R. Domagalski, J. Ford, G. Foster, D. George, Joe Greenberg, L. Greenhill, A. Isaacson, Homin Jiang, Glenn Jones, F. Kapp, H. Kriel, R. Lacasse, A. Lutomirski, D. MacMahon, J. Manley, A. Martens, R. McCullough, M. Muley, W. New, A. Parsons, D. Price, R. Primiani, J. Ray, A. Siemion, V. V. Tonder, L. Vertatschitsch, M. Wagner, J. Weintroub, D. Werthimer   +35 more
semanticscholar   +1 more source

Long-distance telecom-fiber transfer of a radio-frequency reference for radio astronomy

, 2018
Very-long-baseline interferometry (VLBI) for high-resolution astronomical imaging requires phase-stable frequency references at widely separated radio-telescope antennas.
Yabai He, Kenneth G. H. Baldwin, Brian J. Orr, R. Bruce Warrington, M. Wouters, A. Luiten, P. Mirtschin, T. Tzioumis, C. Phillips, J. Stevens, Brett Lennon, Scott Munting, G. Aben, T. Newlands, T. Rayner   +14 more
semanticscholar   +1 more source

Radio physics and radio astronomy

, 2017
Purpose: Review of investigations of cosmic sources radioemission scintillations due to interplanetary plasma irregularities made at the Institute of Radio Astronomy of the National Academy of Sciences of Ukraine, from the first observations in the mid-70s until now.
Kalinichenko, M, Kuhai, N, Konovalenko, O, Brazhenko, A, Bubnov, I, Yerin, S, Rucker, H, Zarka, P, Lesia, A, Ivantyshyn Karpenko, O, Institute, Physiko-Mechanical, Lytvynenko, O, Romanchuk, O, Frantsuzenko, A   +13 more
openaire   +4 more sources