Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28809
Title: | Novel RFI Mitigation Methods in the Square Kilometre Array 1 Mid Correlator Beamformer | Authors: | Gunaratne, Thushara Carlson, Brent COMORETTO, Giovanni |
Issue Date: | 2019 | Journal: | JOURNAL OF ASTRONOMICAL INSTRUMENTATION | Number: | 08 | Issue: | 01 | First Page: | 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 |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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RFI_Mitigation_in_SKA1_Mid_CBF_JAI_Pre_Print.pdf | preprint | 1.76 MB | Adobe PDF | View/Open |
JAI S2251171719400117.pdf | [Administrators only] | 1.46 MB | Adobe PDF |
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