V.V. Kiryushkin1, S.I. Babusenko2, A.V. Zhuravlev3, A.V. Smolin4

1-4 JSC RIE “PROTEK” (Voronezh, Russia)

Problem statement. Currently, the global navigation satellite system (GNSS) has become the main means of high-precision navigation support for aircraft flights. However, the presence of powerful enemy electronic countermeasures leads to a violation of the determination of coordinates in the consumer navigation equipment of the GNSS. To solve the problem of determining the coordinates of an aircraft equipped with GNSS under the conditions of an interfering effect on this system of an unknown source of interference, it is proposed to use measurements on board the aircraft of the direction to the source of interference.

Purpose. Develop a method for determining the planned coordinates of an aircraft under the influence of an interference signal from an unknown source of interference that disrupts the reception of signals from GNSS, using information about the direction to the source of interference.

Results. A method based on determining the coordinates of an unknown source of interference by measuring its bearing on board an aircraft at two points with coordinates measured by GNSS has been proposed. Further determination of the aircraft coordinates is carried out by the calculated coordinates of the interference source and measurements of its bearing at two points lying on the same flight path, in conditions of disruption of the GNSS operation by an interference signal.

Practical significance. Evaluation of the effectiveness of the proposed method, carried out by the method of computer simulation, showed that the effectiveness of the proposed method will largely be determined by the accuracy of measuring the angular parameters on board the aircraft. When measuring the bearing with an error of 0.01°, the accuracy of determining the position of the aircraft will be commensurate with the accuracy of GNSS and will be 30-50 m. However, when using a less accurate radio direction finder with an angle measurement error of 0.1 °, the error in determining the planned coordinates will be 250-300 m, which is commensurate with the accuracy of local radio navigation systems, for example, a short-range radio engineering system.

Kiryushkin V.V., Babusenko S.I., Zhuravlev A.V., Smolin A.V. Determination of plan coordinates aircraft by bearing measurements unknown source of interference radiation. Radiotekhnika. 2022. V. 86. № 7. P. 93−99. DOI: https://doi.org/10.18127/j00338486-202207-15 (In Russian)

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