A.S. Naumov1

1 Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia)

1 naumov-a-s@mail.ru

Problem statement. Determining the direction of a radio emitter is an important function of radio monitoring, performed in real time, which places strict demands on the algorithm's performance. Reducing the amount of computation is essential for processing short-term radio signals. Using the phase direction-finding method, a multiparameter optimized function is formed whose arguments are the azimuth and elevation angle of the direction of the radio emitter. For antenna systems consisting of three or more antenna elements, global extremum search has no analytical solution, so deterministic methods based on partial derivatives and zero-order methods yield unsatisfactory results. The use of exhaustive search methods requires a large number of calculations, the time required for which can exceed the signal duration used in modern radio communication systems.

Objective. Develop an optimization method based on stochastic simulated annealing that will reduce the computational costs required for radio emitter direction finding by reducing the number of calculations of the optimized function.

Results. A combined method based on stochastic simulated annealing optimization is proposed. This method improves the efficiency of radio emitter direction finding systems using a multichannel phase interferometer by reducing the number of objective function calculations during extremum searches through the use of additional spatial information based on one or two pairs of antenna elements, while maintaining accuracy.

Practical significance. The proposed method allows increasing the efficiency of information-measuring systems used in radio monitoring complexes, specifically in the direction finding of short-duration signals of modern transmission types in real time, as well as reducing the information delivery delay time to an automated system or operator.

Naumov A.S. Stochastic optimization methods for efficiency improvement in information-measuring systems for spatial channel parameter determination // Radioengineering. 2026. V. 90. № 9. P. 54−62. DOI: https://doi.org/10.18127/j00338486-202609-05

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