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http://hdl.handle.net/20.500.12386/28809
Titolo: | Novel RFI Mitigation Methods in the Square Kilometre Array 1 Mid Correlator Beamformer | Autori: | Gunaratne, Thushara Carlson, Brent COMORETTO, Giovanni |
Data pubblicazione: | 2019 | Rivista: | JOURNAL OF ASTRONOMICAL INSTRUMENTATION | Numero: | 08 | Fascicolo: | 01 | Da pagina:: | 1940011 | 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. | URI: | http://hdl.handle.net/20.500.12386/28809 | URL: | https://www.worldscientific.com/doi/10.1142/S2251171719400117 | ISSN: | 2251-1725 | DOI: | 10.1142/S2251171719400117 | Bibcode ADS: | 2019JAI.....840011G | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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RFI_Mitigation_in_SKA1_Mid_CBF_JAI_Pre_Print.pdf | preprint | 1.76 MB | Adobe PDF | Visualizza/apri |
JAI S2251171719400117.pdf | [Administrators only] | 1.46 MB | Adobe PDF |
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