| DOI | Resolve DOI: https://doi.org/10.1142/S2251171719400117 |
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| Author | Search for: Gunaratne, Thushara1; Search for: Carlson, Brent1; Search for: Comoretto, Gianni |
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| Affiliation | - National Research Council Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | Frequency-slice (FS); Radio Frequency Interference (RFI); Sample Clock Frequency Offset (SCFO); Square Kilometre Array (SKA) |
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| Abstract | The Square Kilometre Array (SKA) Phase 1 Mid Correlator Beamformer (Mid.CBF) adopts two novel methods to mitigate radio frequency interference (RFI) at the various stages of its signal chains. First, the pioneering Sample Clock Frequency Offset (SCFO) sampling suppresses interference which leaks into individual ‘Frequency-Slice’ (FS) (sub-bands) in the cross-correlations. Second, the ‘Shift-Resample-Shift-Back’ method minimizes the addition of noise due to strong clustered RFI. Empirical studies conducted with simulation of the systems confirm that the proposed methods significantly reduce the impact of RFI on the output of the radio telescope. |
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| Publication date | 2019-03 |
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| Publisher | World Scientific Publishing |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7f6e1ecb-e93e-4371-b7b2-a3756f8d5d71 |
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| Record created | 2019-06-06 |
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| Record modified | 2020-03-16 |
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