Email this article Performance of electronic refocusing of the beams of the multi-beam hybrid reflector antenna by processing the signals of the on-ground beacon
- Authors: Dardymov A.V.1
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Affiliations:
- Kazan National Research Technical University named after A.N. Tupolev-KAI
- Issue: No 3 (2024)
- Pages: 35-42
- Section: Telecommunication and radio engineering
- URL: https://ogarev-online.ru/2306-2819/article/view/276333
- DOI: https://doi.org/10.25686/2306-2819.2024.3.35
- EDN: https://elibrary.ru/BEVTGI
- ID: 276333
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Abstract
Problem statement. Under operational conditions, the reflector profile of the multibeam hybrid mirror antenna (MBHRA) on board the satellite experiences deformations, disrupting the required beam configuration and deteriorating the energy characteristics of the communication system.
Aim. This study aims at evaluating the effectiveness of electronic stabilization (refocusing) of the satellite MBHRA beams by reconstructing the current reflector profile through processing the signal signature from an on-ground beacon.
Results/Conclusion. Improved coverage quality has been confirmed by adjusting the weighting coefficients of the antenna array clusters while monitoring the current reflector profile via reconstruction of the best-fit paraboloid (BFP) from the ground beacon's signal. The BFP reconstruction algorithm operates effectively at any beacon position within the working area. Stability and accuracy increase slightly (by 0,1 dB) when the beacon is near the antenna's optical axis. It was found that the BFP algorithm yields good performance when the signal-to-noise ratio in the communication channels exceeds 10 dB.
Practical significance. The use of electronic stabilization of MBHRA beams mitigates the impact of operational factors on the radio-technical characteristics of satellite communication systems, eliminating the need for photogrammetric reflector controls and mechanical stabilization methods.
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About the authors
Anatoly V. Dardymov
Kazan National Research Technical University named after A.N. Tupolev-KAI
Author for correspondence.
Email: anatoly.dardymov@yandex.ru
SPIN-code: 5697-1450
PhD student at the Department for Radio-Electronic and Telecommunication Systems. Research interests – antenna technology. The author of 6 scientific publications.
Russian Federation, 10, Karl Marx Street, Kazan, 420111References
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