Results 11 to 20 of about 2,211 (159)

The study on the effect of population density on radio frequency interference (RFI) analysis on dynamic spectrum at selected CALLISTO stations

Physical Sciences and Technology, 2021
Radio Frequency Interference (RFI) has become a critical issue in radio astronomy observation in recent years. Compact Astronomical Low-Cost Instrument for Spectroscopy in Transportable Observatories (CALLISTO) is a worldwide network of spectrometer ...
Z. N Zainud-din, N. H Sabri, R. Umar, C. Monstein   +3 more
doaj   +3 more sources

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope [PDF]

EPJ Web of Conferences, 2020
Low-frequency radio telescopes are cheap and useful devices for the investigation of terrestrial and extra-terrestrial emissions. These emissions come either from the Sun and the planet Jupiter to terrestrial emissions.
Aqasha Adam, Zheng Andrien, Athreya Sneha, Tan Hoe Teck   +3 more
doaj   +1 more source

Design, Implementation, and Characterization of a Signal Acquisition Chain for SADino: The Precursor of the Italian Low-Frequency Telescope Named the Sardinia Aperture Array Demonstrator (SAAD)

Sensors, 2023
Low-frequency aperture arrays represent sensitive instruments to detect signals from radio astronomic sources situated in the universe. In Italy, the Sardinia Aperture Array Demonstrator (SAAD) consists of an ongoing project of the Italian National ...
Adelaide Ladu, Luca Schirru, Mauro Pili, Gian Paolo Vargiu, Francesco Gaudiomonte, Federico Perini, Andrea Melis, Raimondo Concu, Matteo Murgia   +8 more
doaj   +1 more source

THE CRITICAL FREQUENCY OF THE IONOSPHERIC F2-LAYER AS OBTAINED FROM IONOSONDE DATA AND OBSERVATIONS OF SOLAR RADIO BURSTS [PDF]

Radio Physics and Radio Astronomy, 2022
Subject and Purpose. Studying the time variations shown by the critical frequencies of the ionospheric F2 layer through comparative analysis of ionosonde data and observations of type III solar radio bursts. Methods and Methodology.
L. O. Stanislavsky, I. M. Bubnov, S. M. Yerin, A. V. Zalizovski , V. M. Lisachenko   +4 more
doaj   +1 more source

Inexpensive Interferometer for Low Frequency Radio Astronomy [PDF]

Journal of Communication and Information Systems, 2012
Un réseau interférométrique similaire à la station prototype de réseau basse fréquence (LOFAR) (LOPES) et au réseau transitoire de huit mètres de longueur d'onde (ETA) est en cours de développement pour couvrir la gamme de fréquences LOFAR inférieure à 100 MHz à l'Observatoire spatial austral (SSO) (29,4 • S, 53,8 • W, 480 m. a. s.
Guilherme S. Rosa, Nelson Jorge Schuch, Natanael Rodrigues Gomes, J.R. Bergmann, E. Echer, Renato Machado   +5 more
openaire   +1 more source

STUDIES OF PULSAR RADIO EMISSION WITH THE GURT RADIO TELESCOPE SUBARRAY [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: Finding the possibility of pulsar radio emission studies in the meter wavelength range with a small-sized subarray of the low-frequency GURT radio telescope of new generation. Development of the joint pulsar radio emission observations technique
V. V. Zakharenko, O. O. Konovalenko, S. M. Yerin, I. M. Bubnov, I. Y. Vasylieva, O. M. Ulyanov, V. Y. Yatsyna   +6 more
doaj   +1 more source

Low Frequency Radio Astronomy from the Moon [PDF]

Highlights of Astronomy, 1998
AbstractThe radio sky at frequencies of several MHz and below is essentially unexplored with high angular resolution due to refraction and opacity in the Earth’s ionosphere. An interferometer array in space providing arcminute resolution images would allow a wide range of problems in solar, planetary, galactic, and extragalactic astronomy to be ...
D.L. Jones, K.W. Weiler
openaire   +1 more source

70 YEARS OF LOW-FREQUENCY RADIO ASTRONOMY IN UKRAINE [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The article is devoted to the birth and seventy years of successful development of low-frequency radio astronomy in Ukraine. This activity was started in the mid-50s of the prior century by the outstanding Ukrainian scientist ...
O. O. Konovalenko, V. V. Zakharenko, O. M. Ulyanov, L. I. Gurvits, I. B. Vavilova, Ya. S. Yatskiv, P. L. Tokarsky, O. O. Stanislavsky, I. M. Bubnov, M. M. Kalinichenko, S. V. Stepkin, M. A. Sydorchuk, E. V. Vasylkivskyi, O. M. Reznichenko, M. V. Shevchuk, L. O. Stanislavsky, S. M. Yerin, V. O. Shepelev, V. V. Dorovskii   +18 more
doaj   +1 more source

Low Frequency Planetary Radio Astronomy [PDF]

Symposium - International Astronomical Union, 2002
This paper reviews planetary radio astronomy at low frequencies. At least at frequencies observable from the Earth's surface, this field has been almost solely the study of Jovian magnetospheric emissions. With the discovery of extra-solar planets, and the potential for new telescopes with large collecting areas, we may well see more objects and ...
openaire   +1 more source

CREATION AND APPROBATION OF A LOW-FREQUENCY RADIO ASTRONOMY ANTENNA FOR STUDIES OF OBJECTS OF THE UNIVERSE FROM THE MOON'S FARSIDE [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: Theoretical and experimental studies of the active antenna – an element of the low-frequency radio telescope antenna array for the future observatory on the farside of the Moon.
I. N. Bubnov, O. O. Konovalenko, P. L. Tokarsky, O. M. Korolev, S. M. Yerin, L. O. Stanislavsky   +5 more
doaj   +1 more source