Reconstruction of radio signals from air-showers with autoencoder

Pavel Bezyazeekov; Nikolay Budnev; Oleg Fedorov; Oleg Gress; Oleg Grishin; Andreas Haungs; Tim Huege; Yulia Kazarina; Matthias Kleifges; Dmitriy Kostunin; Elena Korosteleva; Leonid Kuzmichev; Vladimir Lenok; Nima Lubsandorzhiev; Stanislav Malakhov; Tatyana Marshalkina; Roman Monkhoev; Eleonora Osipova; Alexandr Pakhorukov; Leonid Pankov; Vasiliy Prosin; Frank Schröder; Dmitriy Shipilov; Alexey Zagorodnikov

arXiv · 2101.02943

Reconstruction of radio signals from air-showers with autoencoder

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Abstract

The Tunka Radio Extension (Tunka-Rex) is a digital antenna array (63 antennas distributed over 1km^2) co-located with the TAIGA observatory in Eastern Siberia. Tunka-Rex measures radio emission of air-showers induced by ultra-high energy cosmic rays in the frequency band of 30-80 MHz. Air-shower signal is a short (tens of nanoseconds) broadband pulse. Using time positions and amplitudes of these pulses, we reconstruct parameters of air showers and primary cosmic rays. The amplitudes of low-energy event (E<10^17 eV) cannot be used for successful reconstruction due to the domination of background. To lower the energy threshold of the detection and increase the efficiency, we use autoencoder neural network which removes noise from the measured data. This work describes our approach to denoising raw data and further reconstruction of air-shower parameters. We also present results of the low-energy events reconstruction with autoencoder.

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Pavel Bezyazeekov, Nikolay Budnev, Oleg Fedorov, Oleg Gress, Oleg Grishin, Andreas Haungs, Tim Huege, Yulia Kazarina, Matthias Kleifges, Dmitriy Kostunin, Elena Korosteleva, Leonid Kuzmichev, Vladimir Lenok, Nima Lubsandorzhiev, Stanislav Malakhov, Tatyana Marshalkina, Roman Monkhoev, Eleonora Osipova, Alexandr Pakhorukov, Leonid Pankov, Vasiliy Prosin, Frank Schröder, Dmitriy Shipilov, Alexey Zagorodnikov. 2021-01-08. Reconstruction of radio signals from air-showers with autoencoder. https://arxiv.org/abs/2101.02943

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