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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2407.03462 |
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| _version_ | 1866910512669786112 |
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| author | Zhao, Yifan Jacobs, Daniel C. Samson, Titu Krishna, Mrudula Gopal Horn, Michael Lalonde, Marc-Olivier R. Braithwaite, Raven Skabelund, Logan |
| author_facet | Zhao, Yifan Jacobs, Daniel C. Samson, Titu Krishna, Mrudula Gopal Horn, Michael Lalonde, Marc-Olivier R. Braithwaite, Raven Skabelund, Logan |
| contents | Precision measurements of the beam pattern response are needed to predict the response of a radio telescope. Mapping the beam of a low frequency radio array presents a unique challenge and science cases such as the observation of the 21\,cm line at high redshift have demanding requirements. Drone-based systems offer the unique potential for a measurement which is entirely under experimenter control, but progress has been paced by practical implementation challenges. Previously, a prototype drone system, called the External Calibrator for Hydrogen Observatories (ECHO), demonstrated good performance in making a complete hemispherical beam measurement. This paper reports updates to the system focusing on performance of a new drone platform, minimizing interference from the drone, and a new transmitter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_03462 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | An Update on the External Calibrator for Hydrogen Observatories (ECHO) Zhao, Yifan Jacobs, Daniel C. Samson, Titu Krishna, Mrudula Gopal Horn, Michael Lalonde, Marc-Olivier R. Braithwaite, Raven Skabelund, Logan Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Precision measurements of the beam pattern response are needed to predict the response of a radio telescope. Mapping the beam of a low frequency radio array presents a unique challenge and science cases such as the observation of the 21\,cm line at high redshift have demanding requirements. Drone-based systems offer the unique potential for a measurement which is entirely under experimenter control, but progress has been paced by practical implementation challenges. Previously, a prototype drone system, called the External Calibrator for Hydrogen Observatories (ECHO), demonstrated good performance in making a complete hemispherical beam measurement. This paper reports updates to the system focusing on performance of a new drone platform, minimizing interference from the drone, and a new transmitter. |
| title | An Update on the External Calibrator for Hydrogen Observatories (ECHO) |
| topic | Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2407.03462 |