V.V. Kiryushkin1, S.I. Babusenko2, A.V. Zhuravlev3

1-3 JSC RIE “PROTEK” (Voronezh, Russia)

Problem statement. The main means of protecting the navigation equipment of consumers of the global navigation satellite system from intentional signal-like interference created by domestic means of electronic suppression is a structural-temporal signal-like interference compensator. The study of the effectiveness of such a compensator was previously carried out for "ideal conditions" under the influence of one powerful interference, which made it possible to ignore the influence of errors in determining the interference parameters on the effectiveness of its compensation. However, with the simultaneous action of several powerful interferences, their mutual destructive effect on the reception and determination of the parameters of each interference is observed, which affects the effectiveness of their compensation in the structural-temporal compensator.

Purpose. To study the effect of errors in determining the parameters of interference on the characteristics of the noise immunity of a structural-temporal compensator for signal-like interference.

Results. The conducted studies have shown that under “ideal conditions” under the influence of one powerful interference, the errors in determining the parameters of this interference by a structural-temporal compensator are insignificant and practically do not affect the effectiveness of its compensation. In this case, the noise immunity of the compensator reaches 130 dB. However, with the simultaneous action of two powerful interferences, their mutual destructive effect on the reception and determination of the parameters of each interference is observed, which negatively affects the effectiveness of their compensation. In this case, the main factor is the error in determining the phase of the interference, an increase in which to 0.001 radians reduces the noise immunity of the compensator to 40 dB.

Practical significance. The results obtained in practice require taking into account the errors in determining the parameters of signal-like interference in the structure-time compensator and require the application of measures to reduce them.

Kiryushkin V.V., Babusenko S.I., Zhuravlev A.V. Investigation of noise immunity of the structure-time compensator of signal-like interference for navigation equipment of consumers of the global navigation satellite system. Radiotekhnika. 2022. V. 86. № 7. P. 84−92.
DOI: https://doi.org/10.18127/j00338486-202207-14 (In Russian)

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