| Téléchargement | - Voir la version finale : Beam maps of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) measured with a drone (PDF, 9.3 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1109/OJAP.2025.3554457 |
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| Auteur | Rechercher : Tyndall, WillIdentifiant ORCID : https://orcid.org/0000-0001-6196-5955; Rechercher : Reda, Alex; Rechercher : Richard Shaw, J.; Rechercher : Bandura, Kevin; Rechercher : Chakraborty, Arnab; Rechercher : Halpern, MarkIdentifiant ORCID : https://orcid.org/0000-0002-1760-0868; Rechercher : Harris, MaileIdentifiant ORCID : https://orcid.org/0009-0004-0645-7842; Rechercher : Kuhn, Emily; Rechercher : Maceachern, Joshua; Rechercher : Mena-Parra, Juan; Rechercher : Newburgh, Laura B.; Rechercher : Ordog, Anna1Identifiant ORCID : https://orcid.org/0000-0002-2465-8937; Rechercher : Pinsonneault-Marotte, Tristan; Rechercher : Rose Polish, Anna; Rechercher : Saliwanchik, BenIdentifiant ORCID : https://orcid.org/0000-0002-5089-7472; Rechercher : Sanghavi, PranavIdentifiant ORCID : https://orcid.org/0000-0001-5504-229X; Rechercher : Siegel, Seth R.; Rechercher : Whitmer, AudreyIdentifiant ORCID : https://orcid.org/0000-0001-7509-7247; Rechercher : Wulf, DallasIdentifiant ORCID : https://orcid.org/0000-0001-7314-9496 |
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| Affiliation | - Conseil national de recherches Canada. Herzberg en astronomie et en astrophysique
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| Bailleur de fonds | Rechercher : Natural Sciences and Engineering Research Council of Canada; Rechercher : National Science Foundation; Rechercher : Dunlap Institute at the University of Toronto |
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| Format | Texte, Article |
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| Sujet | antenna measurements; telescopes; remotely piloted vehicles (RPVs); drones; extraterrestrial measurements; acoustic beams; calibration; payloads; instruments; transmitting antennas; sea measurements |
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| Résumé | We present beam measurements of the CHIME telescope using a radio calibration source deployed on a drone payload. During test flights, the pulsing calibration source and the telescope were synchronized to GPS time, enabling in-situ background subtraction for the full N² visibility matrix for one CHIME cylindrical reflector. We use the autocorrelation products to estimate the primary beam width and centroid location, and compare these quantities to solar transit measurements and holographic measurements where they overlap on the sky. We find that the drone, solar, and holography data have similar beam parameter evolution across frequency and both spatial coordinates. This paper presents the first drone-based beam measurement of a large cylindrical radio interferometer. Furthermore, the unique analysis and instrumentation described in this paper lays the foundation for near-field measurements of experiments like CHIME. |
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| Date de publication | 2025-03-24 |
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| Maison d’édition | IEEE |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 9831c9e6-d7dd-4174-9097-7008bc781fc8 |
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| Enregistrement créé | 2025-06-27 |
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| Enregistrement modifié | 2025-06-27 |
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