Варіант структурної будови широкосмугової аналогової системи прихованого зв’язку на основі застосування сигналів детермінованого хаосу
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Файли
Дата
2017
Автори
Пивовар, О.С.
Pyvovar, O.
Назва журналу
Номер ISSN
Назва тому
Видавець
Хмельницький національний університет
Анотація
Розглянута можливість застосування сигналів детермінованого хаосу в якості підносівних для
подальшого використання у надширокосмугових системах аналогового прихованого зв’язку. Запропоновано
варіант структурної будови системи прихованого зв’язку придатної для практичної реалізації.
The use of nonlinear models for a more adequate description and understanding of reality has led to the discovery of a new class of signals a deterministic chaos. Characteristics of the form and spectrum of deterministic chaos signals have become extremely suitable for use in secret broadband communication systems. The possibility of chaotic synchronization of the receiving and transmitting part of the transmission system as well as the discovery of the phenomenon of chaotic synchronous response allowed proceeding to the practical implementation of the systems. The majority of the proposed variants of implementation of secret communication systems based on deterministic chaos signals are based on the use of digital signals as informational in directchaotic information transmission systems. This research includes the classification of wellknown ways of processing signals of deterministic chaos in the aspects of broadband, modulation, and synchronization. The advantages, disadvantages, peculiarities and limitations of using these processes are indicated in terms of practical application in complex circuit design solutions for the construction of high security communication channels which are protected from unauthorized access. In such channels, firstly encryption is carried out by selecting the generator type and its initial parameters of development. Secondly, the high degree of variation in the configuration parameters of the generators of deterministic chaos signals allows obtaining a large number of encryption keys. Thirdly, the result of encryption is purely noiselike, which provides a high degree of security. It is proposed to regard an informational and chaotic signal as ones with approximately the same frequency resource. The introduction of an informational signal into a signal of a deterministic chaos is being implemented by the means of the previous use of oneband modulation without suppression or with partial suppression of carrier frequency. In the case of a singlesideband modulation, it is advisable to remove the upper sideband, and the carrier frequency must be located in the upper part of the spectrum area of the chaotic signal which not occupied by the spectral components. Additional classical modulation improves the practical implementation of uniting the synchronization channel and the informational channel in one physical communication line, as well as allows them to be separated by means of the phenomenon of chaotic synchronous response provided certain correlations of the amplitudes. In accordance with the proposed principle, a structural scheme for the practical implementation of the system was developed based on the use of chaotic synchronous response phenomenon, and the requirements for the construction of the structural elements of the circuit and the communication channel are specified.
The use of nonlinear models for a more adequate description and understanding of reality has led to the discovery of a new class of signals a deterministic chaos. Characteristics of the form and spectrum of deterministic chaos signals have become extremely suitable for use in secret broadband communication systems. The possibility of chaotic synchronization of the receiving and transmitting part of the transmission system as well as the discovery of the phenomenon of chaotic synchronous response allowed proceeding to the practical implementation of the systems. The majority of the proposed variants of implementation of secret communication systems based on deterministic chaos signals are based on the use of digital signals as informational in directchaotic information transmission systems. This research includes the classification of wellknown ways of processing signals of deterministic chaos in the aspects of broadband, modulation, and synchronization. The advantages, disadvantages, peculiarities and limitations of using these processes are indicated in terms of practical application in complex circuit design solutions for the construction of high security communication channels which are protected from unauthorized access. In such channels, firstly encryption is carried out by selecting the generator type and its initial parameters of development. Secondly, the high degree of variation in the configuration parameters of the generators of deterministic chaos signals allows obtaining a large number of encryption keys. Thirdly, the result of encryption is purely noiselike, which provides a high degree of security. It is proposed to regard an informational and chaotic signal as ones with approximately the same frequency resource. The introduction of an informational signal into a signal of a deterministic chaos is being implemented by the means of the previous use of oneband modulation without suppression or with partial suppression of carrier frequency. In the case of a singlesideband modulation, it is advisable to remove the upper sideband, and the carrier frequency must be located in the upper part of the spectrum area of the chaotic signal which not occupied by the spectral components. Additional classical modulation improves the practical implementation of uniting the synchronization channel and the informational channel in one physical communication line, as well as allows them to be separated by means of the phenomenon of chaotic synchronous response provided certain correlations of the amplitudes. In accordance with the proposed principle, a structural scheme for the practical implementation of the system was developed based on the use of chaotic synchronous response phenomenon, and the requirements for the construction of the structural elements of the circuit and the communication channel are specified.
Опис
Ключові слова
нелінійна динамічна система, детермінований хаос, хаотична синхронізація, система прихованого зв’язку, nonlinear dynamical system, deterministic chaos, chaotic synchronization, system of secret communication
Бібліографічний опис
Пивовар, О.С. Варіант структурної будови широкосмугової аналогової системи прихованого зв'язку на основі застосування сигналів детермінованого хаосу [Текст] / О. С. Пивовар // Вісник Хмельницького національного університету. Технічні науки. – 2017. – № 6. – С. 111-116.