Results 1 to 10 of about 178,649 (302)

Space Radio Astronomy in the next 1000001 (binary) years [PDF]

, 2012
Radio astronomy and active exploration of space are peers: both began by efforts of enthusiasts in the 1930s and got a major technological boost in the 1940s-50s.
Gurvits, L. I.
core   +2 more sources

Rapid tactical deployment capability of a transportable optical ground station [PDF]

Scientific Reports
In this paper we present TeraNet-3 (TN-3), a transportable optical ground station (TOGS) comprising the third node of the TeraNet optical ground station network in development by the University of Western Australia (UWA).
Ayden McCann, Shane Walsh, Nicolas Maron, David Gozzard, Shawn McSorley, Sascha Schediwy   +5 more
doaj   +2 more sources

Super-Resolution Parameter Estimation Using Machine Learning-Assisted Spatial Mode Demultiplexing [PDF]

Sensors
We present the use of a light-weight machine learning (ML) model to estimate the separation and relative brightness of two incoherent light sources below the diffraction limit.
David R. Gozzard, John S. Wallis, Alex M. Frost, Joshua J. Collier, Nicolas Maron, Benjamin P. Dix-Matthews, Kevin Vinsen   +6 more
doaj   +2 more sources

THE FOUNDER OF THE DECAMETER RADIO ASTRONOMY IN UKRAINE ACADEMICIAN OF NAS OF UKRAINE SEMEN YAKOVYCH BRAUDE IS 110 YEARS OLD: HISTORY OF CREATION AND DEVELOPMENT OF THE NATIONAL EXPERIMENTAL BASE FOR THE LAST HALF CENTURY [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: A historical review of the experimental baselopment of low-frequency radio astronomy in Ukraine, its foundation half a century ago by an outstanding scientist S.Ya. Braude to the current state.
O. O. Konovalenko, V. V. Zakharenko, L. M. Lytvynenko, O. M. Ulyanov, M. A. Sidorchuk, S. V. Stepkin, V. A. Shepelev, P. Zarka, H. O. Rucker, A. Lecacheux, M. Panchenko, Yu. M. Bruck, P. L. Tokarsky, I. M. Bubnov, S. M. Yerin, V. L. Коliadin, V. M. Melnik, M. M. Kalinichenko, O. O. Stanislavsky, V. V. Dorovskyy, O. D. Khristenko, V. V. Shevchenko, O. S. Belov, A. O. Gridin, O. V. Antonov, V. P. Bovkun, O. M. Reznichenko, V. M. Bortsov, G. V. Kvasov, L. M. Ostapchenko, M. V. Shevchuk, V. A. Shevchenko, Ya. S. Yatskiv, I. B. Vavilova, I. S. Braude, Y. G. Shkuratov, V. B. Ryabov, G. I. Pidgorny, A. G. Tymoshevsky, O. O. Lytvynenko, V. V. Galanin, M. I. Ryabov, A. I. Brazhenko, R. V. Vashchishin, A. V. Frantsuzenko, V. V. Koshovyy, O. L. Ivantyshyn, A. B. Lozinsky, B. S. Kharchenko, I. Y. Vasylieva, I. P. Kravtsov, Y. V. Vasylkivsky, G. V. Litvinenko, D. V. Mukha, N. V. Vasylenko, A. I. Shevtsova, A. P. Miroshnichenko, N. V. Кuhai, Ya. M. Sobolev, N. O. Tsvyk   +59 more
doaj   +1 more source

INVESTIGATIONS OF COSMIC SOURCES RADIOEMISSION SCINTILLATIONS DUE TO INTERPLANETARY PLASMA IRREGULARITIES AT THE INSTITUTE OF RADIO ASTRONOMY, NAS UKRAINE [PDF]

Radio Physics and Radio Astronomy, 2021
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 ...
M. M. Kalinichenko, N. V. Kuhai, O. O. Konovalenko, A. I. Brazhenko, I. M. Bubnov, S. M. Yerin, H. O. Rucker, P. Zarka, A. Lecacheux, O. L. Ivantyshyn, O. O. Lytvynenko, O. I. Romanchuk, A. V. Frantsuzenko   +12 more
doaj   +1 more source

INVESTIGATION OF THE UNIVERSE BY THE LOW-FREQUENCY RADIO ASTRONOMY METHODS IN UKRAINE (According to the report on the XI All-Ukrainian Festival of Science of 18 May 2017, Kyiv) [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: overview of the main results of half a century activities of Ukraine (with emphasis on the last decade) in the field of decameter radio astronomy, presenting a number of astrophysical discoveries in the study of the Solar system, Galaxy and ...
A. A. Konovalenko
doaj   +1 more source

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

International Journal of Antennas and Propagation, 2022
Radio astronomy is a discipline of dynamics and wonders. The vast universe has many secrets to unravel. As one of the important facilities in this discipline, radio telescopes play a key role in collecting astronomical data and unraveling mysteries. With
Yuefei Yan, Song Xue, Xinlan Hu, Peiyuan Lian, Qian Xu, Na Wang, Wulin Zhao, Yang Wu, Baoyan Duan, Congsi Wang   +9 more
doaj   +1 more source

LEONID M. LYTVYNENKO, AN OUTSTANDING SCIENTIST AND RESEARCH MANAGER (Editorial) [PDF]

Radio Physics and Radio Astronomy
This paper is an attempt of paying tribute to the memory of Leonid Mykolayovych Lytvynenko (LML), an outstanding Ukrainian scientist, Full Member of the National Academy of Sciences who worked most fruitfully in the fields of radio science and radio ...
V. V. Zakharenko, O. O. Kostenko, O. O. Konovalenko, D. M. Vavriv, S. L. Prosvirnin, Y. M. Yampolski   +5 more
doaj   +1 more source

The Development of Q-Band HEMT Receiver for VLBI [PDF]

Journal of Astronomy and Space Sciences, 2004
A ultra low noise Q-band HEMT receiver for VLBI has been developed using a local oscillator with a very high phase stability. The performance of receiver was verified by comparison with receivers which were developed at the other countries.
Do-Heung Je, Seog-Tae Han, Tae-Sung Kim, Hyun-Joo Kim, Kang-Dong Kim, Moon-Hee Chung, Chang-Hoon Lee, Duk-Goo Roh   +7 more
doaj   +1 more source

I. S. SHKLOVSKY AND LOW-FREQUENCY RADIO ASTRONOMY

Radio Physics and Radio Astronomy, 2017
Purpose: Proving of the high astrophysical significance of the low-frequency radio astronomy (decameter and adjacent hectometer and meter wavelengths), demonstration of the priority results of the Ukrainian low-frequency radio astronomy as well as ...
A. A. Konovalenko
doaj   +1 more source