Solar bursts as can be observed from the lunar farside with a single antenna at very low frequencies
Sign Up to like & getrecommendations! Published in 2018 at "Astronomische Nachrichten"
DOI: 10.1002/asna.201813522
Abstract: Earth-based observations are complicated by the opacity of Earth's ionosphere at very low frequencies and strong man-made radio frequency interference. This explains long standing interest in building a low frequency radio telescope on the farside… read more here.
Keywords: single crossed; solar bursts; low frequencies; radio telescope ... See more keywords
Orientation of radio-telescope secondary mirror via adaptive sliding mode control
Sign Up to like & getrecommendations! Published in 2017 at "Neurocomputing"
DOI: 10.1016/j.neucom.2016.08.116
Abstract: In this work a parallel manipulator (Stewart platform) is used to align and maintain the position of the secondary mirror of a radio-telescope. The six degrees of freedom platform gives the significant advantage of reaching… read more here.
Keywords: sliding mode; control; secondary mirror; radio telescope ... See more keywords
A proposed optical frequency synchronization system for the South African MeerKAT radio telescope
Sign Up to like & getrecommendations! Published in 2020 at "Optical Fiber Technology"
DOI: 10.1016/j.yofte.2020.102164
Abstract: Abstract The South African MeerKAT radio telescope, a precursor to the Square Kilometre Array (SKA) will be incorporated into the mid-frequency component of SKA Phase 1. After a decade of planning, designing and construction, the… read more here.
Keywords: frequency; radio; radio telescope; meerkat radio ... See more keywords
Radio telescope total power mode: improving observation efficiency
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202038976
Abstract: Aims. Radio observing efficiency can be improved by calibrating and reducing the observations in total power mode rather than in frequency, beam, or position-switching modes. Methods. We selected a sample of spectra obtained from the… read more here.
Keywords: total power; mode; telescope; radio telescope ... See more keywords
An atmosphere monitoring system for the Sardinia radio telescope
Sign Up to like & getrecommendations! Published in 2017 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/28/1/014004
Abstract: The Sardinia radio telescope (SRT) is a new facility managed by the Italian National Institute for Astrophysics (INAF). SRT will detect the extremely faint radio wave signals emitted by astronomical objects in a wide frequency… read more here.
Keywords: system; radio; telescope; sardinia radio ... See more keywords
New design of large fully-steerable radio telescope reflector based on homogenized mesh structure
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/10/244
Abstract: The self-weight of a large fully-steerable radio telescope is one of the important factors affecting its performance. In the existing reflector system scheme, the problem of surface accuracy caused by its large and heavy structure… read more here.
Keywords: steerable radio; reflector; radio telescope; large fully ... See more keywords
Non-uniform temperature distribution of the main reflector of a large radio telescope under solar radiation
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/11/293
Abstract: The non-uniform temperature distribution of the main reflector of a large radio telescope may cause serious deformation of the main reflector, which will dramatically reduce the aperture efficiency of a radio telescope. To study the… read more here.
Keywords: reflector; temperature; main reflector; radio telescope ... See more keywords
Research on the panel adjustment method of an active main reflector for a large radio telescope
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/2/38
Abstract: The surface accuracy of a large parabolic antenna is an important indicator to evaluate the quality of the antenna. It not only directly affects the antenna’s aperture efficiency, thereby determining the shortest wavelength that the… read more here.
Keywords: adjustment; method; radio telescope; antenna ... See more keywords
The Coaxial L-P Cryogenic Receiver of the Sardinia Radio Telescope
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2021.3139744
Abstract: The design and characterization of the coaxial dual-band L-P radio astronomical receiver for the prime focus of the Sardinia radio telescope are presented. The main feature of this receiver is to allow simultaneous radio astronomical… read more here.
Keywords: radio astronomical; radio telescope; receiver; sardinia radio ... See more keywords
A Space Debris-Dedicated Channel for the P-Band Receiver of the Sardinia Radio Telescope: A Detailed Description and Characterization
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Antennas and Propagation Magazine"
DOI: 10.1109/map.2019.2943274
Abstract: Space debris (SD) is an important problem for space operations and a hot topic for space surveillance research. A structured network of radar sensors is available worldwide, offering vital information about debris status. Recently, the… read more here.
Keywords: radio telescope; sardinia radio; debris; space ... See more keywords
An Active Antenna Subarray for the Low-Frequency Radio Telescope GURT—Part II: Numerical Analysis and Experiment
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2019.2929322
Abstract: This second part of two articles’ sequence presents the detailed numerical analysis of electrical and noise parameters of a subarray of the Giant Ukrainian Radio Telescope (GURT) designed for operation in the frequency range of… read more here.
Keywords: part; radio telescope; telescope gurt; frequency ... See more keywords