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Characterisation of the Transient Array Radio Telescope (TART)
Thesis (MEng)--Stellenbosch University, 2021.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2021
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| _version_ | 1867613898561028096 |
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| access_status_str | Open Access |
| author | Mtetho, Ntombi |
| author2 | Ludick, Danie |
| author_browse | Ludick, Danie Mtetho, Ntombi |
| author_facet | Ludick, Danie Mtetho, Ntombi |
| author_sort | Mtetho, Ntombi |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2021. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/123702 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:43:27.297Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/123702 Characterisation of the Transient Array Radio Telescope (TART) Mtetho, Ntombi Ludick, Danie Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Transient Array Radio Telescope (TART) -- Characterization Synthetic apertures Aperture antennas Radio interferometers UCTD Thesis (MEng)--Stellenbosch University, 2021. ENGLISH ABSTRACT: The Transient Array Radio Telescope (TART is a 24-element all-sky aperture synthesis array radio telescope operating in the Global Position System (GPS L1 band at 1.57542 GHz with a narrow bandwidth of 2.5 MHz. This thesis gives a detailed overview and characterisation of the TART, with focus on determining and quantifying the e ect of the antenna elements used in the interferometer. In this work, a new patch antenna is proposed for TART, as limited information of the existing patch antennas used in TART are available. In addition, a two element interferometer experiment using TART is presented. For this experiment, a full-wave CEM analysis is integrated with basic signal processing techniques to simulate complex visibilities. These simulation results are then compared with the ideal complex visibilities calculated using the Van Cittert-Zernicke Theorem, as well as those obtain through TART measurements. Results show that coupling between the antennas plays a role, which emphasises that full-wave CEM simulations integrated into a model for the telescope is useful for e.g. visibility calibrations. This, in turn, will lead to improved imaging. AFRIKAANSE OPSOMMING: Die Transient Array Radio Telescope (TART) is 'n 24-element sintese ra- dioteleskoop wat in die Globale Positionering Stelsel (GPS) L1-band werk by 1.57542 GHz met 'n klein bandwydte van 2.5 MHz. Hierdie tesis gee 'n gedetailleerde oorsig en karakterisering van die TART om die effek van die antennas in die interferometer te bepaal. In hierdie werk word 'n nuwe plak antenna vir TART voorgestel, aangesien daar beperkte inligting vir die bestaande plak antennas van TART beskikbaar is. Daarbenewens word 'n twee element interferometer eksperiment met be- hulp van TART ook gedoen. Vir hierdie eksperiment word 'n volgolf CEM analise geïntegreer met basiese seinverwerking tegnieke om komplekse sig- baarheid waardes te simuleer. Hierdie simulasie-resultate word dan vergelyk met die ideale komplekse sigbaarheid wat bereken word met behulp van die Van Cittert-Zernicke teorie, sowel as metings data verkry met TART. Resul- tate toon dat die koppeling tussen die antennas 'n rol speel, wat daarop dui dat dit nuttig kan wees in 'n sigbaarheids kalibrasieproses. Dit sal weer lei tot verbeterde beelding. Masters 2021-10-12T07:35:50Z 2021-12-22T14:16:43Z 2021-10-12T07:35:50Z 2021-12-22T14:16:43Z 2021-12 Thesis http://hdl.handle.net/10019.1/123702 en_ZA Stellenbosch University 95 pages application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Transient Array Radio Telescope (TART) -- Characterization Synthetic apertures Aperture antennas Radio interferometers UCTD Mtetho, Ntombi Characterisation of the Transient Array Radio Telescope (TART) |
| title | Characterisation of the Transient Array Radio Telescope (TART) |
| title_full | Characterisation of the Transient Array Radio Telescope (TART) |
| title_fullStr | Characterisation of the Transient Array Radio Telescope (TART) |
| title_full_unstemmed | Characterisation of the Transient Array Radio Telescope (TART) |
| title_short | Characterisation of the Transient Array Radio Telescope (TART) |
| title_sort | characterisation of the transient array radio telescope tart |
| topic | Transient Array Radio Telescope (TART) -- Characterization Synthetic apertures Aperture antennas Radio interferometers UCTD |
| url | http://hdl.handle.net/10019.1/123702 |
| work_keys_str_mv | AT mtethontombi characterisationofthetransientarrayradiotelescopetart |