Autocorrelation Method for Phased Antenna Array Calibration Based on Far-Field Measurement System
https://doi.org/10.32603/1993-8985-2025-28-3-106-115
Аннотация
Introduction. An autocorrelation method can be used for calibration of phased antenna arrays (PAA) in the presence of interference. In scenarios where the PAA size is substantial, the initial elements of post-calibration are designated as a reference element for subsequent comparison with the following antenna elements. However, this method becomes time-consuming when the PAA size increases, also affecting the adaptive calibration proposed in this work. In practical applications, the calibration of PAA may be affected by various factors, such as intentional interference, passive interference, weather conditions, equipment aging, etc. Therefore, the impact of different interference levels on the calibration accuracy of PAA should be investigated. In addition, using a calibration antenna instead of a reference antenna may decrease the calibration accuracy of the received signal.
Aim. To design and investigate a method for calibrating a PAA with high accuracy and low complexity based on an autocorrelation algorithm.
Materials and methods. The efficiency of the developed algorithm was estimated using MATLAB/Simulink-based simulation and experimental validation.
Results. To verify the feasibility of the proposed method for a large-scale antenna array, a 2 × 8 phased array antenna is implemented at 3 GHz. The proposed autocorrelation method for PAA exhibited superior performance over the conventional autocorrelation method. In comparison with the conventional autocorrelation technique, the developed method enhances the peak value of the combined beam in the E-plane by 3.2 and 3.7 dB, respectively. Furthermore, the beams at a distance between two antennas equal 0.625λ were tilted by 1.5 and 8° for the proposed and conventional autocorrelation methods, respectively.
Conclusion. The validation through actual measurement data confirmed that the proposed autocorrelation method is more accurate than conventional methods in determining amplitude and phase offsets. The paper points out that the proposed autocorrelation calibration method performs well in large-scale on-site and factory-level calibration, being also effective in scenarios under the presence of external interference.
Об авторах
Xuan Luong Nguyen
VNU University of Science
Вьетнам
Вьетнам
Nguyen Trong Nhan
Air Defense-Air Force Technical Institute
Вьетнам
Вьетнам
Tran Van Thanh
Air Defense-Air Force Technical Institute
Вьетнам
Вьетнам
Phung Bao Nguyen
Le Quy Don Technical University
Вьетнам
Вьетнам
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Рецензия
Для цитирования:
Nguyen X.L., Nhan N.T., Thanh T.V., Nguyen P.B. Autocorrelation Method for Phased Antenna Array Calibration Based on Far-Field Measurement System. Известия высших учебных заведений России. Радиоэлектроника. 2025;28(3):106-115. https://doi.org/10.32603/1993-8985-2025-28-3-106-115
For citation:
Nguyen X.L., Nhan N.T., Thanh T.V., Nguyen P.B. Autocorrelation Method for Phased Antenna Array Calibration Based on Far-Field Measurement System. Journal of the Russian Universities. Radioelectronics. 2025;28(3):106-115. https://doi.org/10.32603/1993-8985-2025-28-3-106-115
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