RFI Mitigation with BETA
The Boolardy Engineering Test Array (BETA) is a 6 antenna interferometer, with each antenna having a 188-element phased array feed at the prime focus. Here we attempt to mitigate the affect of radio frequency interference (RFI) by updating the beam weights using a projection algorithm applied to...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
2016
|
| Online Access: | http://www.atnf.csiro.au/projects/askap/aces_memo012.pdf http://hdl.handle.net/20.500.11937/73555 |
| _version_ | 1848763043617439744 |
|---|---|
| author | Bannister, K. Hellbourg, Gregory Hotan, A. |
| author_facet | Bannister, K. Hellbourg, Gregory Hotan, A. |
| author_sort | Bannister, K. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The Boolardy Engineering Test Array (BETA) is a 6 antenna interferometer, with
each antenna having a 188-element phased array feed at the prime focus. Here we
attempt to mitigate the affect of radio frequency interference (RFI) by updating the
beam weights using a projection algorithm applied to the measured single-dish array
covariance matrix. We observe an astronomical source at 1225 MHz, which contains
substantial interference from the GPS L2 band, and compare a number of different
projection algorithms by looking at the affect on correlated visibilities, and on the
resulting images. The RFI projection algorithms perform remarkably well, yielding a
promising future for this technique. |
| first_indexed | 2025-11-14T10:57:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-73555 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:57:11Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-735552019-07-17T07:59:28Z RFI Mitigation with BETA Bannister, K. Hellbourg, Gregory Hotan, A. The Boolardy Engineering Test Array (BETA) is a 6 antenna interferometer, with each antenna having a 188-element phased array feed at the prime focus. Here we attempt to mitigate the affect of radio frequency interference (RFI) by updating the beam weights using a projection algorithm applied to the measured single-dish array covariance matrix. We observe an astronomical source at 1225 MHz, which contains substantial interference from the GPS L2 band, and compare a number of different projection algorithms by looking at the affect on correlated visibilities, and on the resulting images. The RFI projection algorithms perform remarkably well, yielding a promising future for this technique. 2016 Journal Article http://hdl.handle.net/20.500.11937/73555 http://www.atnf.csiro.au/projects/askap/aces_memo012.pdf restricted |
| spellingShingle | Bannister, K. Hellbourg, Gregory Hotan, A. RFI Mitigation with BETA |
| title | RFI Mitigation with BETA |
| title_full | RFI Mitigation with BETA |
| title_fullStr | RFI Mitigation with BETA |
| title_full_unstemmed | RFI Mitigation with BETA |
| title_short | RFI Mitigation with BETA |
| title_sort | rfi mitigation with beta |
| url | http://www.atnf.csiro.au/projects/askap/aces_memo012.pdf http://hdl.handle.net/20.500.11937/73555 |