Results 21 to 30 of about 6,598 (254)

РАЗВИТИЕ РАДИОАСТРОНОМИЧЕСКОГО ЦЕНТРА ДАННЫХ (RADC) НА ПРАО АКЦ ФИАН

open access: yesOdessa Astronomical Publications, 2011
The Radio Astronomy Data Center (RADC) are developed at PRAO ASC LPI in last some years. It consists from: a) the database of most important for radio astronomers astronomical catalogs; b) the database of observational data of Pushchino Radio Astronomy ...
В. А. Самодуров   +7 more
doaj   +1 more source

THE DAILY 110 MHZ SURVEY (BSA FIAN) IN THE ON-LINE MODE: DATABASE AND PROCESSING ETHODS

open access: yesOdessa Astronomical Publications, 2014
From 2012 on radio telescope BSA FIAN multi beams diagram was started. It capable at July 2014 daily observing by 96   beams in declination -8  .. 42 degrees in the frequency band 109-111.5 MHz.
V. A. Samodurov   +5 more
doaj   +1 more source

Demonstration of 100 Gbps coherent free-space optical communications at LEO tracking rates

open access: yesScientific Reports, 2022
Free-space optical communications are poised to alleviate the data-flow bottleneck experienced by spacecraft as traditional radio frequencies reach their practical limit. While enabling orders-of-magnitude gains in data rates, optical signals impose much
Shane M. Walsh   +7 more
doaj   +1 more source

Intelligent Cognitive Radio Models for Enhancing Future Radio Astronomy Observations

open access: yesAdvances in Astronomy, 2016
Radio astronomy organisations desire to optimise the terrestrial radio astronomy observations by mitigating against interference and enhancing angular resolution. Ground telescopes (GTs) experience interference from intersatellite links (ISLs). Astronomy
Ayodele Abiola Periola   +1 more
doaj   +1 more source

HIGH-FREQUENCY CUTOFF IN TYPE III BURSTS

open access: yesOdessa Astronomical Publications, 2016
In this article we report about a group of solar bursts with high-frequency cutoff, observed on 19 August of 2012 near 8:23 UT, simultaneously by three different radio telescopes: the Ukrainian decameter radio telescope (8-33 MHz), the French Nançay ...
A. A. Stanislavsky   +3 more
doaj   +1 more source

Polygon “Simeiz-Katsively” - changes in the average pole of the Earth and the geomagnetic field over the last century [PDF]

open access: yesITM Web of Conferences, 2019
The character of changing the trajectory of the middle of the North geographical pole of the Earth's surface over the last century is studied. The peculiarities in the changes of its coordinates are established.
Volvach Larisa   +3 more
doaj   +1 more source

Polygon “Simeiz-Katsively” - the cycles in the climatic and the geophysical characteristics of the Crimea [PDF]

open access: yesITM Web of Conferences, 2019
Coherent variations are established with periods of about 10–12 years and 60–70 years, which are found in processes of different physical nature and can be attributed to global cycles in the solar system, the manifestation of which in climatic and ...
Volvach Alexander   +3 more
doaj   +1 more source

Frequencies for Radio Astronomy [PDF]

open access: yesNature, 1970
At present the scope of research in radio astronomy is limited by the allocation of frequencies, some of which have to be shared with other radio services. When the International Telecommunications Union reconsiders all frequency allocations next year, astronomers are hoping for an improvement.
openaire   +2 more sources

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)

open access: yesRadio 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   +7 more
doaj   +1 more source

Big Data Research Infrastructure Collaboration Toward the SKA (BRICSKA)

open access: yesAnais da Academia Brasileira de Ciências, 2021
Astronomy is entering an era of mega-data that will render conventional research methods as well as data and visual analytics tools ineffective. The Square Kilometre Array (SKA) drives one of the most significant big data challenges of the next decades ...
RUSS TAYLOR   +4 more
doaj   +1 more source

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