De-distorting ionospheric effects in the image plane
The Earth's ionosphere refracts radio waves incident on an interferometer, resulting in shifts to the measured positions of radio sources. We present a method to smoothly remove these shifts and restore sources to their reference positions, in both the catalogue and image domains. The method is...
| Main Authors: | , |
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| Format: | Journal Article |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/71045 |
| _version_ | 1848762374699352064 |
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| author | Hurley-Walker, Natasha Hancock, Paul |
| author_facet | Hurley-Walker, Natasha Hancock, Paul |
| author_sort | Hurley-Walker, Natasha |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The Earth's ionosphere refracts radio waves incident on an interferometer, resulting in shifts to the measured positions of radio sources. We present a method to smoothly remove these shifts and restore sources to their reference positions, in both the catalogue and image domains. The method is applicable to instruments and ionospheric weather such that all antennas see the same ionosphere. The method is generalisable to repairing any sparsely-sampled vector field distortion to some input data. The code is available under the Academic Free License1from <a href="https://github.com/nhurleywalker/fits_warp">https://github.com/nhurleywalker/fits_warp</a>. |
| first_indexed | 2025-11-14T10:46:33Z |
| format | Journal Article |
| id | curtin-20.500.11937-71045 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:46:33Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-710452019-03-11T06:47:36Z De-distorting ionospheric effects in the image plane Hurley-Walker, Natasha Hancock, Paul The Earth's ionosphere refracts radio waves incident on an interferometer, resulting in shifts to the measured positions of radio sources. We present a method to smoothly remove these shifts and restore sources to their reference positions, in both the catalogue and image domains. The method is applicable to instruments and ionospheric weather such that all antennas see the same ionosphere. The method is generalisable to repairing any sparsely-sampled vector field distortion to some input data. The code is available under the Academic Free License1from <a href="https://github.com/nhurleywalker/fits_warp">https://github.com/nhurleywalker/fits_warp</a>. 2018 Journal Article http://hdl.handle.net/20.500.11937/71045 10.1016/j.ascom.2018.08.006 restricted |
| spellingShingle | Hurley-Walker, Natasha Hancock, Paul De-distorting ionospheric effects in the image plane |
| title | De-distorting ionospheric effects in the image plane |
| title_full | De-distorting ionospheric effects in the image plane |
| title_fullStr | De-distorting ionospheric effects in the image plane |
| title_full_unstemmed | De-distorting ionospheric effects in the image plane |
| title_short | De-distorting ionospheric effects in the image plane |
| title_sort | de-distorting ionospheric effects in the image plane |
| url | http://hdl.handle.net/20.500.11937/71045 |