Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2023. №3
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2023.3.8
FORMING A STRUCTURAL SCHEME OF RADIOOBMEN WITH A PrS
S.V. Abyshev
FSBEI of HE «MIREA – Russian Technological University»
119454, Moscow, Vernadsky Prospect, 78
The paper was received 30 января 2023
Abstract. The structure of the radio exchange demonstrates the interconnection pattern of the drones with the control center. To protect against unauthorized access to control and navigation channels it is necessary to hide such data and increase their noise immunity. The aim of the work is to use signals with a pseudorandom sequence and duplicate control and navigation blocks in the information channel of a small-scale aerial vehicle. Thus, at the beginning of the paper, a general structural diagram of radio communication between the unmanned aerial vehicle and the control center is presented. The model of 2-element antenna array consisting of two non-directional antenna elements is considered. On the basis of which it is possible to conclude about the signal arrival with a phase shift, taking into account which it is possible to determine the output signal of the array. An important factor is the synchronization and encryption of the signal. Data synchronization can be used by synchronous signal transmission between the drone and the control center. To reduce the probability of interception of the synchronous signal, the data packets containing it are transmitted in a pseudo-random sequence. Synchronization is achieved by using a micronavigation system through continuous radio transmissions from a ground source and simultaneous reception and recording of the signal on the drone. A one-time encryption or scrambler with a reversible symmetric transformation of the encoded information can be used as an encryption or scrambler. A random number generator is used to generate a sequence of random data, from which an array of key information tied to a specific period of use is created. The phase method can be used to process the signal. By measuring the phase shift with a phase detector, you can determine the location of the radio source with respect to the base normal. Measurements can be made with a digital receiving antenna array. Signal processing with digital receiving antenna array is performed by the diagramming device and the adaptive processor unit. As a result, all data using this approach is entered into the information block with the use of a pseudo-random coding change scheme, pseudo-random permutation of the navigation and control blocks.
Key words: SSAV, pseudorandom sequence, PCC, PRBR, radio exchange scheme.
Corresponding author: Stanislav Vladimirovich Abyshev, svabyshev@gmail.com
References
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2. Abyshev S.V. Methods of localization of small aircraft. Zhurnal antenny [Journal of Antennas]. 2022. №2. https://doi.org/10.18127/j03209601-202202-06 (In Russian)
3. Abyshev S.V., Trefilov N.A. Direction finding methods for small UAVs. Proceedings of V International Scientific and Practical Conference «Aktual'nye problemy i perspektivy razvitiya radiotekhnicheskikh i infokommunikatsionnykh sistem» [«Actual Problems and Prospects of Development of Radio Engineering and Infocommunication Systems»]. 2021. P.79-82. (In Russian)
4. Abyshev S.V. Methods for locating UAVs and radio control system devices. Scientific Israel - Technological Advantages. 2021. №1, 2. P.185-187.
5. Abyshev S.V., Trefilov N.A. Antenna element interposition. International Scientific – Practical Conference «INFORMATION INNOVATIVE TECHNOLOGIES», Information Innovative Technologies: Materials of the International scientific – рractical conference. 2020. P.226-230.
For citation:
Abyshev S.V. Forming a structural scheme of radioobmen with a PRS. Zhurnal radioelektroniki [Journal of Radio Electronics] [online] 2023. №3. https://doi.org/10.30898/1684-1719.2023.3.8 (In Russian)