20 July 2016 A real-time KLT implementation for radio-SETI applications
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Abstract
SETI, the Search for ExtraTerrestrial Intelligence, is the search for radio signals emitted by alien civilizations living in the Galaxy. Narrow-band FFT-based approaches have been preferred in SETI, since their computation time only grows like N*lnN, where N is the number of time samples. On the contrary, a wide-band approach based on the Kahrunen-Lo`eve Transform (KLT) algorithm would be preferable, but it would scale like N*N. In this paper, we describe a hardware-software infrastructure based on FPGA boards and GPU-based PCs that circumvents this computation-time problem allowing for a real-time KLT.
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Andrea Melis, Raimondo Concu, Pierpaolo Pari, Claudio Maccone, Stelio Montebugnoli, Andrea Possenti, Giuseppe Valente, Nicoló Antonietti, Delphine Perrodin, Carlo Migoni, Matteo Murgia, Alessio Trois, Massimo Barbaro, Alessandro Bocchinu, Silvia Casu, Maria Ilaria Lunesu, Jader Monari, Alessandro Navarrini, Tonino Pisanu, Francesco Schilliró, Valentina Vacca, "A real-time KLT implementation for radio-SETI applications", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99143D (20 July 2016); doi: 10.1117/12.2232347; https://doi.org/10.1117/12.2232347
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