Automatic calibration of the receiving line of information and control systems in real time

Nhan N.T., Nguyen X.L., Nguyen P.B. Automatic calibration of the receiving line of information and control systems in real time. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2025, vol. 25, no. 3, pp. 554–564. doi: 10.17586/2226-1494-2025-25-3-554-564

In this paper, the novel methodology for real-time automatic calibration of digital transceiver modules in the receiving path of information and control systems is presented. This methodology is grounded in the formation of calibration coefficients through a comparison between the complex signal amplitude at the output of the receiving path of the “virtual” reference module and the complex signal amplitude at the output of the receiving path following signal accumulation. The calibration value for each receiving path output complex signal amplitude is determined by multiplying the output complex signal amplitude by its corresponding calibration coefficient. The gain pattern of the information and control system is synthesized by calculating the weighted sum of the calibrated output complex signal amplitudes across all receiving paths, thereby maximizing the peak gain and minimizing side lobe levels. Simulations and experimental analyses were performed on an information and control system operating in the L-band to validate the proposed methodology. The results indicated a reduction in amplitude errors to 3.79 dB and a decrease in phase errors to 5°40ʹ12ʺ. The proposed methodology meets the requirements for synthesizing a self-calibrating subsystem model employing a soft configuration approach.

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