Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays
Radio interferometry most commonly involves antennas or antenna arrays of identical design. The identical antenna assumption leads to a convenient and useful mathematical simplification resulting in a scalar problem. An interesting variant to this is a "hybrid" interferometer involving two...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
IEEE
2017
|
| Online Access: | http://hdl.handle.net/20.500.11937/57064 |
| _version_ | 1848760005948342272 |
|---|---|
| author | Sutinjo, Adrian Ung, D. Colegate, T. Wayth, R. Hall, Peter Acedo, E. |
| author_facet | Sutinjo, Adrian Ung, D. Colegate, T. Wayth, R. Hall, Peter Acedo, E. |
| author_sort | Sutinjo, Adrian |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Radio interferometry most commonly involves antennas or antenna arrays of identical design. The identical antenna assumption leads to a convenient and useful mathematical simplification resulting in a scalar problem. An interesting variant to this is a "hybrid" interferometer involving two designs. We encounter this in the characterization of low-frequency antenna/array prototypes using a homogenous low-frequency array telescope such as the Murchison Widefield Array (MWA). In this work, we present an interferometry equation that applies to hybrid antennas. The resulting equation involves vector inner products rather than scalar multiplications. We discuss physical interpretation and useful applications of this concept in the areas of sensitivity measurement and calibration of an antenna/array under test using a compact calibrator source. |
| first_indexed | 2025-11-14T10:08:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-57064 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:08:54Z |
| publishDate | 2017 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-570642018-02-06T01:35:05Z Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays Sutinjo, Adrian Ung, D. Colegate, T. Wayth, R. Hall, Peter Acedo, E. Radio interferometry most commonly involves antennas or antenna arrays of identical design. The identical antenna assumption leads to a convenient and useful mathematical simplification resulting in a scalar problem. An interesting variant to this is a "hybrid" interferometer involving two designs. We encounter this in the characterization of low-frequency antenna/array prototypes using a homogenous low-frequency array telescope such as the Murchison Widefield Array (MWA). In this work, we present an interferometry equation that applies to hybrid antennas. The resulting equation involves vector inner products rather than scalar multiplications. We discuss physical interpretation and useful applications of this concept in the areas of sensitivity measurement and calibration of an antenna/array under test using a compact calibrator source. 2017 Journal Article http://hdl.handle.net/20.500.11937/57064 10.1109/TAP.2017.2710206 IEEE fulltext |
| spellingShingle | Sutinjo, Adrian Ung, D. Colegate, T. Wayth, R. Hall, Peter Acedo, E. Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title | Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title_full | Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title_fullStr | Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title_full_unstemmed | Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title_short | Revisiting Hybrid Interferometry With Low-Frequency Radio Astronomy Arrays |
| title_sort | revisiting hybrid interferometry with low-frequency radio astronomy arrays |
| url | http://hdl.handle.net/20.500.11937/57064 |