V.Yu. Semenov1

1 Nizhni Nivgorod State University n.a. N.I. Lobachevsky (Nizhni Nivgorod, Russia)

1 vitali.semenov@gmail.com

Formulation of the problem. The jammers, as a rule, are television towers, cellular base stations, and so on. An approach to two-dimensional interference suppression (in azimuth and elevation) is proposed, followed by two-dimensional direction finding of useful information sources.

Goal. To propose the structure of an active interference suppressor and a method of digital signal processing from the software of a radio telemetry complex with automatic tracking of objects through their direction finding.

Results. An analytical expression is obtained for the two-dimensional pseudospectral direction finding function based on correlated signals from moving objects against the background of active interference.

Practical significance. The power vector method of the correlation matrix of signals in the antenna array channels is used as an algorithm for combating interference. For direction finding, the method of minimal polynomial of the correlation matrix is used. Both methods work in the case of a short sample of signal samples, and also adaptively estimate the effective number of interference and the number of sources on the air. These two properties are extremely important in practice for the implementation of a digital signal processing algorithm based on domestic microcircuits. Numerical modeling of the proposed sequence of digital signal processing was carried out. The simulation showed high efficiency, both in terms of the accuracy of two-dimensional direction finding of the information source, and in terms of the probability of a bit error after noise suppression.

Semenov V.Yu. Two-dimensional interference suppression method in a passive location system with automatic direction finding. Radiotekhnika. 2025. V. 89. № 3. P. 143−156. DOI: https://doi.org/10.18127/j00338486-202503-13 (In Russian)

1. Yang S., Zhenhua W., Zhe Y. Trends and Countermeasures of Next Generation Telemetry Technology Innovation. 2020 IEEE 3rd International Conference of Safe Production and Informatization (IICSPI). Chongqing City. China. 2020. Р. 7-12.
2. Chen S., Meng Y., Tu J., Wu L., Chen X., Qi T. Design and Implementation of Telemetry Simulation Equipment for Target Missile. 2023 IEEE 16th International Conference on Electronic Measurement & Instruments (ICEMI). Harbin. China. 2023. Р. 476-479.
3. Aslanov G.K., Aslanov T.G., Kazibekov R.B., Musaibov R.R. Influence of transients in the information processing channel of the airport automatic radio direction finder on the direction finding accuracy. Информатика, телекоммуникации и управление. 2021. №14-3.
   Р. 56–63.
4. Dianovský R., Pavol P., Bugaj M. The ground station for long-range monitoring flight control and operational data telemetry of unmanned aerial vehicles. Perner's Contacts. 2023. 18. 10.46585/pc.2023.1.2454.
5. Kirillov S.N., Pisaka P.S. Algorithm of telemetry information weighting signal processing from territorially-distributed receiving stations. 2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE). Novosibirsk. Russia. 2018. Р. 197-201.
6. Leonovich G.I., Sorokin M.S., Krutov A.F. Nizkochastotnyj radiotelemetricheskij kanal na osnove prostranstvenno raspredelennoj priemnoj antennoj sistemy i ortogonal'nogo chastotnogo mul'tipleksirovanija. Izvestija Samarskogo nauchnogo centra RAN. 2011. №6-1. S. 48-51 (in Russian).
7. Wang W., Zhang Y., Wang X., Xu H., Tian H. Design of reconfigurable real-time telemetry monitoring and quantitative management system for remote sensing satellite in orbit. 2018 IEEE 3rd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC). Chongqing. China. 2018. Р. 1293-1297.
8. Pralon M., Pralon L., Schulz D., Thoma R.S. On the performance of real dual-polarized antenna arrays for 2D unconditional direction of arrival estimation. Proceedings of the 10th European Conference on Antennas and Propagation. Apr. 2016. Р. 1–5.
9. Ferid H., Hatem C., Gharsallah A. Estimation of 2-D direction of arrival with an extended correlation matrix. IAENG International Journal of Computer Science. 2007. Р. 255-260. 10.1109/WPNC.2007.353642.
10. Semjonov V.Ju., Korotyshev A.V. Podavlenie uzkopolosnyh stacionarnyh pomeh v telemetricheskom komplekse na osnove avtokompensatora
    s udalennymi kanalami. Zhurnal radiojelektroniki [jelektronnyj zhurnal]. 2020. № 12. https://doi.org/10.30898/1684-1719.2020.12.11 (in
    Russian).
11. Popescu O., Saquib M., Popescu D.C., Rice M.D. Interference mitigation in aeronautical telemetry systems using Kalman filter. IEEE Transactions on Aerospace and Electronic Systems. 2007. V. 43. №. 4. Р. 1624-1630. DOI: 10.1109/TAES.2007.4441763.
12. Godara L.C. Smart antennas. CRC Press. 2004. 458 p.
13. Gantmaher F.R. Teorija matric. M.: Nauka. 1988. 552 s.
14. Ermolaev V.T., Semjonov V.Ju., Sorokin I.S., Flaksman A.G., Jastrebov A.V. Reguljarizacija vesovogo vektora adaptivnoj antennoj reshetki putem ogranichenija chisla bazisnyh vektorov. Izvestija vuzov. Ser. Radiofizika. 2015. T. 58. № 3. S. 235–243 (in Russian).
15. Ermolaev V.T., Flaksman A.G., Elohin A.V., Kupcov V.V. Metod minimal'nogo mnogochlena dlja ocenki parametrov signalov, prinimaemyh antennoj reshetkoj. Akusticheskij zhurnal. 2018. T. 64. № 1. S. 78-85 (in Russian).
16. Artjuhin I.V., Ermolaev V.T., Semjonov V.Ju., Flaksman A.G., Shmonin O.A. Dvumernaja pelengacija so sverhrazresheniem v avtomobil'nom MIMO radare v uslovijah korrelirovannosti celej. Jelektrosvjaz'. 2022. № 8. S. 45-52 (in Russian).
17. Flaksman A.G., Semjonov V.Ju., Ermolaev V.T. Jeksperimental'noe issledovanie dvumernogo podavlenija pomeh v aktivnom radare na baze adaptivnoj antennoj reshetki dlja sluchaja korotkoj vyborki. Izvestija SPbGJeTU LJeTI. № 4. T. 15. 2022. S. 5–16 (in Russian).