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Spectral Kurtosis-Based RFI Mitigation for CHIME
Name
s225117171940004x.pdf
Description
Published version
Size
1.49 MB
Format
Adobe PDF
Checksum (MD5)
16968aebe80c63017fc97838ba2ee0d3
Author(s)
Taylor, Jacob
Denman, Nolan
Bandura, Kevin
Berger, Philippe
Masui, Kiyoshi
Renard, Andre
Tretyakov, Ian
Vanderlinde, Keith
Journal
Journal of Astronomical Instrumentation
Publisher
World Scientific Pub Co Pte Lt
Version
Final published version
Abstract
© 2019 The Author(s). We present the implementation of a spectral kurtosis-based Radio-Frequency Interference detection system on the CHIME instrument and its reduced-scale pathfinder. Our implementation extends single-receiver formulations to the case of a compact array, combining samples from multiple receivers to improve the confidence with which RFI is detected. Through comparison between on-sky data and simulations, we show that the statistical properties of the canonical spectral kurtosis estimator are functionally unchanged by cross-array integration. Moreover, by comparison of simultaneous data from CHIME and the Pathfinder, we evaluate our implementation's capacity for interference discrimination for compact arrays of various sizes. We conclude that a spectral kurtosis-based implementation provides a scalable, high cadence RFI discriminator for compact multi-receiver arrays.
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
10.1142/S225117171940004X
