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- Title
Radio-Frequency Interference at the McGill Arctic Research Station.
- Authors
Dyson, T.; Chiang, H. C.; Egan, E.; Ghazi, N.; Ménard, T.; Monsalve, R. A.; Moso, T.; Peterson, J.; Sievers, J. L.; Tartakovsky, S.
- Abstract
The frequencies of interest for redshifted 21 cm observations are heavily affected by terrestrial radio-frequency interference (RFI). We identify the McGill Arctic Research Station (MARS) as a new RFI-quiet site and report its RFI occupancy using 122 h of data taken with a prototype antenna station developed for the Array of Long-Baseline Antennas for Taking Radio Observations from the Sub-Antarctic. Using an RFI flagging process tailored to the MARS data, we find an overall RFI occupancy of 1.8% averaged over 20–125 MHz. In particular, the FM broadcast band (88–108 MHz) is found to have an RFI occupancy of at most 1.6%. The data were taken during the Arctic summer, when degraded ionospheric conditions and an active research base contributed to increased RFI. The results quoted here therefore represent the maximum-level RFI environment at MARS.
- Subjects
RADIO interference; REDSHIFT; RADIO observations of artificial satellites; RADIO astronomy; INTERFEROMETRY
- Publication
Journal of Astronomical Instrumentation, 2021, Vol 10, Issue 2, pN.PAG
- ISSN
2251-1717
- Publication type
Article
- DOI
10.1142/S2251171721500070