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RFI flagging in solar and space weather low frequency radio observations
- Source :
- Monthly Notices of the Royal Astronomical Society. 521:630-637
- Publication Year :
- 2023
- Publisher :
- Oxford University Press (OUP), 2023.
-
Abstract
- Radio spectroscopy provides a unique inspection perspective for solar and space weather research, which can reveal the plasma and energetic electron information in the solar corona and inner heliosphere. However, radio-frequency interference (RFI) from human activities affects sensitive radio telescopes, and significantly affects the quality of observation. Thus, RFI detection and mitigation for the observations is necessary to obtain high quality science-ready data. The flagging of RFI is particularly challenging for the solar and space weather observations at low frequency, because the solar radio bursts can be brighter than the RFI, and may show similar temporal behaviour. In this work, we investigate RFI flagging methods for solar and space weather observations, including a strategy for aolagger, and a novel method that makes use of a morphology convolution. These algorithms can effectively flag RFI while preserving solar radio bursts.
- Subjects :
- Astrophysics - Solar and Stellar Astrophysics
Physics - Space Physics
Space and Planetary Science
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics - Instrumentation and Methods for Astrophysics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Solar and Stellar Astrophysics (astro-ph.SR)
Space Physics (physics.space-ph)
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 521
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....19997f11c967756c8a45c5c981db430c