bsuirДоклады БГУИРDoklady BGUIR1729-76482708-0382БГУИР10.35596/1729-7648-2023-21-6-61-69bsuir-3792Research ArticleЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКАELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICSОбнаружение сигналов с хаотически изменяющейся формой и малой вероятностью радиоперехватаDetection of Signals with Chaotic Varying Forms and Low Intercept ProbabilityТузлуковВ. П.TuzlukovV. Р.

Тузлуков Вячеслав Петрович, д-р физ.-мат. наук, проф., зав. каф. технической эксплуатации авиационного и радиоэлектронного оборудования

220096, г. Минск, ул. Уборевича, 77

Тел.: +375 44 549-35-17

Tuzlukov Vyacheslav Petrovich, Dr. of Sci. (Phys. and Math.), Professor, Head of the Department of Technical Maintenance of Aviation and Radio Electronic Equipment

220096, Minsk, Uborevichа St., 77

Tel.: +375 44 549-35-17

slava.tuzlukov@mail.ruБелорусская государственная академия авиацииBelarusian State Aviation Academy2023040120242166169Copyright © Тузлуков В.П., 20242024Тузлуков В.П.Tuzlukov V.Р.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.bsuir.by/jour/article/view/3792

Проанализирована вероятность радиоперехвата сигналов с хаотически изменяющейся формой для систем обработки прямой последовательности импульсов с расширенным спектром. Энергетический обнаружитель, синхронные и асинхронные, когерентные и некогерентные структуры рассматриваются для обнаружения случайных сигналов, имеющих вид прямой последовательности импульсов с расширенным спектром. Предлагается простая процедура обнаружения сигналов на основе бинарной корреляционной функции для небинарных псевдослучайных последовательностей. Получена вероятность обнаружения случайных сигналов с расширенным спектром. Сравнительный анализ характеристик обнаружения показал, что использование хаотических последовательностей импульсов с расширенным спектром позволяет уменьшить вероятность радиоперехвата.

Low probability of intercept performance of direct-sequence spread-spectrum system with chaotic spreading sequences is investigated. The energy detectors, synchronous and asynchronous, coherent and non-coherent structures are studied here to detect the presence of chaotic direct-sequence spread-spectrum signals. Simple detection approach using a binary correlation function to detect nonbinary chaotic sequences is proposed. The expressions of detection probabilities of chaotic spreading signals are derived. Comparisons between systems using chaotic and binary sequences are given in terms of the low probability of intercept performance, and the performance improvement with chaotic spreading sequences is observed.

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The authors declare that there are no conflicts of interest present.