Results 11 to 20 of about 178,649 (302)

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

After the SKA - Radio Astronomy in 2049 [PDF]

open access: yes, 2012
The concept of a Square Kilometre Array was developed to ensure that progress in Radio Astronomy in the early 21st Century continued at the same impressive pace as was achieved during the first 50 years. The SKA telescope is designed to pave that road to
Harvey-Smith, Lisa
core   +1 more source

THE CROSS-IDENTIFICATION, VISUALIZATION AND COMPARATIVE ANALYSIS OF ASTRONOMICAL CATALOGS IN A COMMON DATABASE RADC

open access: yesOdessa Astronomical Publications, 2017
The Pushchino Observatory of ASC LPI have been developing in some last years database of some astronomical catalogs (Radio Astronomy Data Center - RADC, look on http://astro.prao.ru/db/ and http://observations.prao.ru/).
M. A. Kitaeva   +4 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

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

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

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

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

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

Industrial interference and radio astronomy [PDF]

open access: yesAdvances 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

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