V.V. Nerovny1, A.V. Zhuravlev2, M.A. Lebedev3

1,2 JSC RIE “PROTEK” (Voronezh, Russia)

3 Military Air Academy named after professor N.E. Zhukovsky and Yu.A. Gagarin (Voronezh, Russia)

1 valery.km@yandex.ru; 2 protek@protek-vrn.ru; 3 max_cwan@mail.ru

Formulation of the problem. With the development and introduction of new types of BOC signals in global navigation satellite systems, there is a problem of increasing the unambiguity of their definition in consumer reception equipment. An analysis of the main characteristics of BOC signals shows that their main drawback is the multi-peak and high level of side lobes of the autocorrelation function.

Purpose. By selecting various combinations of the initial phases of three meander subcarrier oscillations (MPCs), determine the most optimal option that combines the minimum level of the side lobes and the width of the main peak of the autocorrelation function.

Results. Mathematical expressions have been obtained for calculating the autocorrelation functions of navigation signals with triple meander modulation at subcarrier frequencies. The simulation results show that optimal selection of the initial phases of the meander subcarriers makes it possible to synthesize a signal with the lowest possible level of the side lobes of the autocorrelation function.

Practical significance. The results obtained can be used by specialists in the field of satellite radio navigation in the development and modernization of GNSS.

Nerovny V.V., Zhuravlev A.V., Lebedev M.A.  Autocorrelation functions of meander-modulated signals at three subcarrier frequencies. Radiotekhnika. 2025. V. 89. № 7. P. 91−96. DOI: https://doi.org/10.18127/j00338486-202507-17 (In Russian)

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