Results 21 to 30 of about 183,322 (313)
40. Radio Astronomy (Radio Astronomie) [PDF]
Transactions of the International Astronomical Union, 1991 The following commission members have contributed to this report:W.J. Altenhoff, H. Andernach, J. Baars, R. Chini, R.J. Cohen, J.J. Condon, Y. Fukui, R. Güsten, J.M. van der Hulst, C. Henkel, W. Huchtmeier, M. Ishiguro, T. Krichbaum, M, Kundu, A. Lazenby, W. Reich, P. Roelfsema, S.E. Thorsett, R. Tuffs, CM. Walmsley, H. Wendker, R.
openaire +1 more source
Radio Astronomical Polarimetry and the Lorentz Group [PDF]
, 1999 In radio astronomy the polarimetric properties of radiation are often modified during propagation and reception. Effects such as Faraday rotation, receiver cross-talk, and differential amplification act to change the state of polarized radiation.
Barakat R. +9 more
core +3 more sources
THE DAILY 110 MHZ SURVEY (BSA FIAN) IN THE ON-LINE MODE: DATABASE AND PROCESSING ETHODS
Odessa 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
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
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Demonstration of 100 Gbps coherent free-space optical communications at LEO tracking rates
Scientific 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
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Sparse Image Reconstruction for the SPIDER Optical Interferometric Telescope
, 2021 The concept of a recently proposed small-scale interferometric optical imaging device, an instrument known as the Segmented Planar Imaging Detector for Electro-optical Reconnaissance (SPIDER), is of great interest for its possible applications in ...
McEwen, Jason D., Pratley, Luke
core +1 more source
Intelligent Cognitive Radio Models for Enhancing Future Radio Astronomy Observations
Advances 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
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HIGH-FREQUENCY CUTOFF IN TYPE III BURSTS
Odessa 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
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Polygon “Simeiz-Katsively” - changes in the average pole of the Earth and the geomagnetic field over the last century [PDF]
ITM 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
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Polygon “Simeiz-Katsively” - the cycles in the climatic and the geophysical characteristics of the Crimea [PDF]
ITM 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
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