V. A. Gorokhov1, Z. K. Sibirkina2, A. O. Tektinov3, A. V. Chumakin4
1–4 JSC “KNIRTI” – Kaluga Scientific Research Radio Engineering Institute (Zhukov, Russia)

1 gorohov.vladimir.aleksandr@yandex.ru, 2 zina@mi-ras.ru, 3 Tektinovao@yandex.ru, 4 engineer21cen@mail.ru

Calculation of bearing using the amplitude-comparison method involves preliminary measurement of antenna system characteristics (radiation patterns, gain coefficients) in an anechoic chamber using a high-precision rotary device (positioner). Based on the measured parameters of the antenna systems, bearing characteristics (BC) are calculated. BC are used in combat operations to calculate bearing. The method of bearing based on amplitude comparison inherently requires the most accurate determination of the values of BC of the antenna device.

In the field, there is a need to update the characteristics of antenna systems due to many factors. Some of them are: influence of the supporting structure on which the antenna device is placed; possible repair of the antenna system; “drift” of parameters due to the influence of external factors. Within limited time frames there is a task to obtain the characteristics of antenna systems taking into account the influence of the above factors, in order to significantly reduce the bearing error. To accomplish this task, a non-standard approach that includes several stages has been developed and tested in practice.

Summarizing the obtained results, we can come to the following conclusions. The method described in the article makes it possible to obtain the parameters of antenna systems (bearing characteristics) as close as possible to the real parameters, which allows to achieve the necessary accuracy of bearing with less material and time costs. The error of calculation of bearing decreases several times from tens of degrees to units. This fact gives a strong argument in favor of the correct application of the above method in this particular case.

The proposed method allows to save financial, time and production resources due to the absence of expensive transportation to the place of direction finding characteristics measuring in the anechoic chamber, and also frees up the time of using the anechoic chamber, which corresponds to the concept of lean production. This method of adapting the theoretically calculated characteristics of antenna systems to real parameters in order to improve direction finding accuracy has been tested, debugged and applied in tests of the reconnaissance and direction finding equipment included in the tested product.

Gorokhov V.A., Sibirkina Z.K., Tektinov A.O., Chumakin A.V. Theoretical-experimental method of increasing bearing accuracy through adaptation of theoretically calculated characteristics of antenna systems to actual parameters. Antennas. 2025. № 2. P. 22–29. DOI: https://doi.org/10.18127/j03209601-202502-03 (in Russian)

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