Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays
©2018. American Geophysical Union. All Rights Reserved. Radio frequency interference (RFI) is an ever-increasing problem for remote sensing and radio astronomy, with radio telescope arrays especially vulnerable to RFI. Localizing the RFI source is the first step to dealing with the culprit system. I...
| Main Authors: | , , |
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| Format: | Journal Article |
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Blackwell Publishing Ltd
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72266 |
| _version_ | 1848762704247914496 |
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| author | Steeb, J. Davidson, David Wijnholds, S. |
| author_facet | Steeb, J. Davidson, David Wijnholds, S. |
| author_sort | Steeb, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | ©2018. American Geophysical Union. All Rights Reserved. Radio frequency interference (RFI) is an ever-increasing problem for remote sensing and radio astronomy, with radio telescope arrays especially vulnerable to RFI. Localizing the RFI source is the first step to dealing with the culprit system. In this paper, a new localization algorithm for interferometric arrays with low array beam sidelobes is presented. The algorithm has been adapted to work both in the near field and far field (only the direction of arrival can be recovered when the source is in the far field). In the near field the computational complexity of the algorithm is linear with search grid size compared to cubic scaling of the state-of-the-art 3-D MUltiple SIgnal Classification (MUSIC) method. The new method is as accurate as 3-D MUSIC. The trade-off is that the proposed algorithm requires a once-off a priori calculation and storing of weighting matrices. The accuracy of the algorithm is validated using data generated by low-frequency array while a hexacopter was flying around it and broadcasting a continuous-wave signal. For the flight, the mean distance between the differential GPS positions and the corresponding estimated positions of the hexacopter is 2 m at a wavelength of 6.7 m. |
| first_indexed | 2025-11-14T10:51:48Z |
| format | Journal Article |
| id | curtin-20.500.11937-72266 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:51:48Z |
| publishDate | 2018 |
| publisher | Blackwell Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-722662020-07-15T01:01:08Z Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays Steeb, J. Davidson, David Wijnholds, S. ©2018. American Geophysical Union. All Rights Reserved. Radio frequency interference (RFI) is an ever-increasing problem for remote sensing and radio astronomy, with radio telescope arrays especially vulnerable to RFI. Localizing the RFI source is the first step to dealing with the culprit system. In this paper, a new localization algorithm for interferometric arrays with low array beam sidelobes is presented. The algorithm has been adapted to work both in the near field and far field (only the direction of arrival can be recovered when the source is in the far field). In the near field the computational complexity of the algorithm is linear with search grid size compared to cubic scaling of the state-of-the-art 3-D MUltiple SIgnal Classification (MUSIC) method. The new method is as accurate as 3-D MUSIC. The trade-off is that the proposed algorithm requires a once-off a priori calculation and storing of weighting matrices. The accuracy of the algorithm is validated using data generated by low-frequency array while a hexacopter was flying around it and broadcasting a continuous-wave signal. For the flight, the mean distance between the differential GPS positions and the corresponding estimated positions of the hexacopter is 2 m at a wavelength of 6.7 m. 2018 Journal Article http://hdl.handle.net/20.500.11937/72266 10.1002/2017RS006513 Blackwell Publishing Ltd restricted |
| spellingShingle | Steeb, J. Davidson, David Wijnholds, S. Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title | Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title_full | Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title_fullStr | Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title_full_unstemmed | Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title_short | Computationally Efficient Radio Frequency Source Localization for Radio Interferometric Arrays |
| title_sort | computationally efficient radio frequency source localization for radio interferometric arrays |
| url | http://hdl.handle.net/20.500.11937/72266 |