- Title (english):
- Analysis of Near-Field Radio Frequency Interference at the LOFAR Station in Irbene
- Creator:
- Inaki Janices Chamizo
- Publisher:
- Ventspils: Ventspils Augstskola
- Date created:
- 2025
- Type group:
- Text
- Type:
- Scientific Work
Metadata
- Title (english):
- Analysis of Near-Field Radio Frequency Interference at the LOFAR Station in Irbene
- Alternative title (latvian):
- Tuvā lauka radio frekvences traucējumu analīze LOFAR stacijā Irbenē
- Scientific work type:
- Bakalaura darbs
- Creator:
- Inaki Janices Chamizo
- Contributor:
- Vladislavs Bezrukovs, zinātniskais vadītājs
- Contributor:
- Artūrs Orbidāns, recenzents
- Format extent (latvian):
- 66 lp.
- Publisher:
- Ventspils: Ventspils Augstskola
- Date created:
- 2025
- Format medium:
- Paper
- Language:
- english
- Abstract (english):
- Title of the thesis: Analysis of Near-Field Radio Frequency Interference at the LOFAR Station in Irbene Author: Iñaki Janices Chamizo Supervisor: Ms.sc.ing. Vladislavs Bezrukovs Scope of work: 66 pages, 1 table, 19 figures, 23 bibliographic references, 1 annex Keywords: RADIO FREQUENCY INTERFERENCE, LOFAR, NEAR-FIELD IMAGING, SINGLE-STATION INTERFEROMETRY, LOW-FREQUENCY RADIO ASTRONOMY Radio Frequency Interference (RFI) is one of the most critical challenges in low- frequency radio astronomy, particularly for wide-aperture, software-defined observatories like LOFAR – the Low Frequency Array. This bachelor thesis presents an analysis of near- field RFI at the LOFAR station located in Irbene, Latvia, with a focus on characterizing local interference sources that can degrade the quality of astronomical observations. To address this, the work combines theoretical background on low-frequency interferometry with the development of software tools for single-station imaging. The objective of the project is to process visibilities from LOFAR's internal baselines to generate power maps of the station’s immediate surroundings. These maps reveal how signal power varies across frequency, time, and height, and are used to visualize and track interference patterns. The thesis also introduces a real-time processing system, equipped with a basic web application, capable of generating images directly from live data streams. The system was successfully validated in field tests using controlled RFI sources, confirming its ability to detect and localize interference in real-world conditions. The results of this study contribute to improving LOFAR’s resilience to near-field interference and pave the way for operational RFI monitoring tools at the station level.
- Is part of collection:
- Academia (Kolekcija)
- Subject:
- Bakalaura darbi
- Subject:
- Ventspils Augstskola. Informācijas tehnoloģiju fakultāte
- Subject:
- Datorzinātnes
- URL:
- https://ventspils.biblioteka.lv/AlisePAC/Details?title=Analysis%2Bof%2BNear-Field%2BRadio%2BFrequency%2BInterferenc&Id=278745&Ident=1288806&InstanceId=29&LibraryId=0
- Geographic name:
- Ventspils (Latvija)
- Object location (*):
- Ventspils Augstskola
- Date captured:
- 02.03.2026
- APLIS copyright status:
- Protected by rights
- APLIS access rights:
- This work is protected by copyright and/or neighboring rights. It can be freely used for personal use, scientific research, or self-education. Other uses require permission from the right holder(s).
- APLIS statement of rights:
- Protected by copyrights - not in commercial circulation
- APLIS access notice:
- Accessible online (without the ability to download)
- Blocked:
- Nē
- Type group:
- Text
- Type:
- Scientific Work
- URI:
-
https://dom.lndb.lv/data/obj/1664860
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| 1. | copyright.json | Autortiesību fails | 7.35 KB | 748b8dcb3eded53248fba35e2f7c3323 |
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