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A high-precision interpolation method for pulsed radio signals from cosmic-ray air showers

Corstanje, A.; Buitink, S.; Desmet, M.; Falcke, H.; Hare, B. M.; Hörandel, J. R.; Huege, T. 1; Jhansi, V. B.; Karastathis, N. 1; Krampah, G. K.; Mitra, P.; Mulrey, K.; Nelles, A.; Nivedita, K.; Pandya, H.; Scholten, O.; Terveer, K.; Thoudam, S.; Trinh, G.; ... mehr

Abstract:

Analysis of radio signals from cosmic-ray induced air showers has been shown to be a reliable method to extract shower parameters such as primary energy and depth of shower maximum. The required detailed air shower simulations take 1 to 3 days of CPU time per shower for a few hundred antennas. With nearly 60,000 antennas envisioned to be used for air shower studies at the Square Kilometre Array (SKA), simulating all of these would come at unreasonable costs. We present an interpolation algorithm to reconstruct the full pulse time series at any position in the radio footprint, from a set of antennas simulated on a polar grid. Relying on Fourier series representations and cubic splines, it significantly improves on existing linear methods. We show that simulating about 200 antennas is sufficient for high-precision analysis in the SKA era, including e.g. interferometry which relies on accurate pulse shapes and timings. We therefore propose the interpolation algorithm and its implementation as a useful extension of radio simulation codes, to limit computational effort while retaining accuracy.


Verlagsausgabe §
DOI: 10.5445/IR/1000162660
Veröffentlicht am 28.09.2023
Originalveröffentlichung
DOI: 10.1088/1748-0221/18/09/P09005
Scopus
Zitationen: 4
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.09.2023
Sprache Englisch
Identifikator ISSN: 1748-0221
KITopen-ID: 1000162660
Erschienen in Journal of Instrumentation
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 18
Heft 09
Seiten Art.Nr.: P09005
Schlagwörter Data processing methods, Large detector systems for particle and astroparticle physics, Simulation methods and programs, Systematic effects
Nachgewiesen in Dimensions
Scopus
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