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| Paper: |
GALFACTS RFI Excision Methods |
| Volume: |
442, Astronomical Data Analysis Software and Systems XX (ADASSXX) |
| Page: |
115 |
| Authors: |
Andrecut, M.; Guram, S. S.; George, S. J.; Taylor, A. R. |
| Abstract: |
Radio astronomical observations are susceptible to Radio Frequency
Interference (RFI) contamination. In this case, the signal from astrophysical
sources is distorted due to close, and relatively strong, radio emissions
from other sources operating on the same frequency spectrum (communication
services, for example). As a consequence, the observed data needs
to be cleaned, by removing the undesired RFI components, while preserving
as much of the underlying useful information as possible. As the data
acquisition rates of radio telescopes increases and observations bandwidth
extend beyond protected spectral allocations, software systems to
mitigate RFI signals are becoming critical. Here, we discuss some
of the RFI excision methods implemented in the data processing pipeline
of the Galactic ALFA Continuum Survey (GALFACTS), which is a large-area
spectro-polarimetric survey being carried out with the Arecibo Radio
telescope in Puerto Rico. |
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