N.V. Baranovskiy1, S.B. Nelipa2, A.V. Kosolapov3, A.G. Andreev4, V.S. Panko5

1–3 JSC «SPE «Radiosvyaz» (Krasnoyarsk, Russia)
4,5 Siberian Federal University (Krasnoyarsk, Russia)

1 nik.bar.2001@mail.ru, 2 sb.nelipa@yandex.ru, 3 dwl@mail.ru, 4 AAndreyev@sfu-kras.ru, 5 vpanko@sfu-kras.ru

Currently, ensuring the required accuracy of measuring navigation parameters is one of the key tasks in the field of radio navigation systems. Medium and long wave radio navigation systems are widely used in maritime navigation. One of the significant problems in this case is multipath propagation of signals, which occurs when conducting objects are present near the antenna, the dimensions of which are comparable to the wavelength of the carrier frequency of the signal. These objects cause secondary radiation of the navigation signal, which leads to an uneven phase pattern, frequency distortion of the signals and negatively affects the accuracy of determining coordinates and other navigation parameters. The paper will consider the influence of various forms of secondary radiators on the measurement error of the delay and phase of the navigation signal and compare the magnitude of the unevenness of the phase pattern for each type of radiator.

The presence of reflective objects with dimensions λ/4–λ/2 near the antennas of the reference stations leads to a significant distortion of the amplitude and phase patterns of the antennas. The phase change depending on the azimuth can reach 10°–40°. These conclusions have also been confirmed by modeling real objects on the ground. Modeling individual objects allows you to determine the impact of each object. Modeling a group of objects on an area allows you to determine the most appropriate location, that is, with the least amount of unevenness.

Baranovskiy N.V., Nelipa S.B., Kosolapov A.V., Andreev A.G., Panko V.S. Electrodynamic modeling of multipath propagation of medium-wave radio waves. Achievements of modern radioelectronics. 2026. V. 80. № 2. P. 39–48. DOI: https://doi.org/10.18127/j20700784-202602-04 [in Russian]

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