Multi-dimensional radio frequency interference framework for characterizing radio astronomy observatories

نویسندگان

چکیده

Radio frequency interference (RFI) has historically plagued radio astronomy, worsening with the rapid spread of electronics and increasing telescope sensitivity. We present a multi-dimensional probabilistic framework for characterizing RFI environment around astronomy site that uses data from observations themselves. apply to about 1500 h commissioning (∼200 TB) MeerKAT telescope; producing six-dimensional array yields both average occupancy as well distributions mean function key variables (time day, frequency, baseline, azimuth, elevation). This allows automated alerting significant new sources monitoring trends. Our results provide first detailed view at high As expected, in L-band, we find major contributors are global positioning system satellites, flight distance measurement equipment, mobile communications. Beyond environments, our approach observers access prior probability any combination tracked variables, allowing more efficient observation planning flagging.

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ژورنال

عنوان ژورنال: Journal of Astronomical Telescopes, Instruments, and Systems

سال: 2021

ISSN: ['2329-4221', '2329-4124']

DOI: https://doi.org/10.1117/1.jatis.8.1.011003