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 problem of two-dimensional direction finding in a radiotelemetry complex with automatic tracking of moving objects is considered. The basis of the complex is a flat digital antenna array. We study the case when two objects are in the main beam of the radiation pattern (super-resolution case), and the received signals from them are correlated. The possibility of using a short signal sample to measure the correlation matrix in the problem under consideration is analyzed separately, as the most interesting for practical implementation. In modern radio telemetry systems, the direction finding option is necessary for high-quality reception of information simultaneously from several moving objects.

Goal. To propose the structure of a direction finder and a method of digital signal processing from a radio telemetry complex with automatic tracking of objects.

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

Practical significance. The results of numerical modeling of the accuracy of measuring the azimuth and elevation angle of a moving object using the super-resolution minimal polynomial method are presented. A comparison was made with the traditional MUSIC method, which showed better accuracy of the proposed method and better resolution of two objects located in the same beam of the radiation pattern. It is shown that the proposed method works in the case of a short sample of the input process. The proposed method also allows you to adaptively measure the number of targets on the air. These two properties are extremely important in practice for the implementation of a digital signal processing algorithm based on domestic microcircuits.

Semenov V.Yu. Method of two-dimensional direction finding in a telemetry complex based on a digital antenna array. Radiotekhnika. 2025. V. 89. № 2. P. 102−113. DOI: https://doi.org/10.18127/j00338486-202502-14 (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. 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.
4. 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.
5. 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).
6. 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.
7. 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.
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. Artjuhin I.V., Ermolaev V.T., Semenov 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).
11. Flaksman A.G., Semenov 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. 2022. T. 15. № 4. S. 5–16 (in Russian).
12. 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).
13. Godara L.C. Smart antennas. CRC Press. 2004. 458 p.
14. Mengali U, Andrea A. Synchronization techniques for digital receivers. Plenum Press. 1997. 529 p.
15. Gantmaher F.R. Teorija matric. M.: Nauka. 1988. 552 s. (in Russian).