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Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study

The Sardinia Radio Telescope is a quasi-Gregorian system with a shaped 64 m diameter primary reflector and a 7.9 m diameter secondary reflector. It was designed to operate with high efficiency across the 0.3–116 GHz frequency range. The telescope is equipped with a cryogenic coaxial dual-frequency L...

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Autores principales: Ladu, Adelaide, Schirru, Luca, Gaudiomonte, Francesco, Marongiu, Pasqualino, Angius, Gianmarco, Perini, Federico, Vargiu, Gian Paolo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9185563/
https://www.ncbi.nlm.nih.gov/pubmed/35684881
http://dx.doi.org/10.3390/s22114261
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author Ladu, Adelaide
Schirru, Luca
Gaudiomonte, Francesco
Marongiu, Pasqualino
Angius, Gianmarco
Perini, Federico
Vargiu, Gian Paolo
author_facet Ladu, Adelaide
Schirru, Luca
Gaudiomonte, Francesco
Marongiu, Pasqualino
Angius, Gianmarco
Perini, Federico
Vargiu, Gian Paolo
author_sort Ladu, Adelaide
collection PubMed
description The Sardinia Radio Telescope is a quasi-Gregorian system with a shaped 64 m diameter primary reflector and a 7.9 m diameter secondary reflector. It was designed to operate with high efficiency across the 0.3–116 GHz frequency range. The telescope is equipped with a cryogenic coaxial dual-frequency L-P band receiver, which covers a portion of the P-band (305–410 MHz) and the L-band (1300–1800 MHz). Although this receiver has been used for years in its original design, with satisfactory results, it presents some parts that could be upgraded in order to improve the performances of the system. With the passing of time and with technology advances, the presence of unwanted human-made signals in the area around the telescope, known as radio frequency interferences, has grown exponentially. In addition, the technology of the receiver electronic control system became obsolete and it could be replaced with next-generation electronic boards, which offer better performances both service reliability and low generation of unwanted radio frequency signals. In this paper, a feasibility study for improving the L-P band receiver is discussed, taking into account the mitigation of the main radio frequency interferences. With this study, it is possible to have a sensitive instrument that can be used for scientific research at low frequencies (P- and L-bands), which are usually populated by signals from civil and military mobile communications, TV broadcasting and remote sensing applications.
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spelling pubmed-91855632022-06-11 Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study Ladu, Adelaide Schirru, Luca Gaudiomonte, Francesco Marongiu, Pasqualino Angius, Gianmarco Perini, Federico Vargiu, Gian Paolo Sensors (Basel) Article The Sardinia Radio Telescope is a quasi-Gregorian system with a shaped 64 m diameter primary reflector and a 7.9 m diameter secondary reflector. It was designed to operate with high efficiency across the 0.3–116 GHz frequency range. The telescope is equipped with a cryogenic coaxial dual-frequency L-P band receiver, which covers a portion of the P-band (305–410 MHz) and the L-band (1300–1800 MHz). Although this receiver has been used for years in its original design, with satisfactory results, it presents some parts that could be upgraded in order to improve the performances of the system. With the passing of time and with technology advances, the presence of unwanted human-made signals in the area around the telescope, known as radio frequency interferences, has grown exponentially. In addition, the technology of the receiver electronic control system became obsolete and it could be replaced with next-generation electronic boards, which offer better performances both service reliability and low generation of unwanted radio frequency signals. In this paper, a feasibility study for improving the L-P band receiver is discussed, taking into account the mitigation of the main radio frequency interferences. With this study, it is possible to have a sensitive instrument that can be used for scientific research at low frequencies (P- and L-bands), which are usually populated by signals from civil and military mobile communications, TV broadcasting and remote sensing applications. MDPI 2022-06-02 /pmc/articles/PMC9185563/ /pubmed/35684881 http://dx.doi.org/10.3390/s22114261 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ladu, Adelaide
Schirru, Luca
Gaudiomonte, Francesco
Marongiu, Pasqualino
Angius, Gianmarco
Perini, Federico
Vargiu, Gian Paolo
Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title_full Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title_fullStr Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title_full_unstemmed Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title_short Upgrading of the L-P Band Cryogenic Receiver of the Sardinia Radio Telescope: A Feasibility Study
title_sort upgrading of the l-p band cryogenic receiver of the sardinia radio telescope: a feasibility study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9185563/
https://www.ncbi.nlm.nih.gov/pubmed/35684881
http://dx.doi.org/10.3390/s22114261
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