Removing Radio Interference from Contaminated Astronomical Spectra Using an Independent Reference Signal and Closure Relations

@inproceedings{FHRemovingRI,
  title={Removing Radio Interference from Contaminated Astronomical Spectra Using an Independent Reference Signal and Closure Relations},
  author={B F.H. and Kapteyn}
}
The growing level of radio frequency interference (RFI) is a recognized problem for research in radio astronomy. This paper describes an intuitive but powerful RFI cancellation technique that is suitable for radio spectroscopy where time-averages are recorded. An RFI ““ reference signal,ÏÏ is constructed from the cross power spectrum of the signals from the two polarizations of a reference horn pointed at the source of the RFI signal. The RFI signal paths obey simple phase and amplitude closure… CONTINUE READING
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