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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Modeling of systems and processes</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Modeling of systems and processes</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Моделирование систем и процессов</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2219-0767</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">120335</article-id>
   <article-id pub-id-type="doi">10.12737/2219-0767-2026-19-1-61-71</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Технические науки</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject></subject>
    </subj-group>
    <subj-group>
     <subject>Технические науки</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Application of system analysis to find the optimal structure of a nonlinear frequency–modulated signal in radar air traffic control systems</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Применение системного анализа для поиска оптимальной структуры нелинейного частотно – модулированного сигнала в радиолокационных системах управления воздушным движением</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Пелевин</surname>
       <given-names>Андрей Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Pelevin</surname>
       <given-names>Andrey Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>AndPeleSer@yandex.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Военно-воздушная академия им. профессора Н.Е. Жуковского и Ю.А. Гагарина</institution>
    </aff>
    <aff>
     <institution xml:lang="en">Air Force Academy named after professor N.E. Zhukovsky and Y.A. Gagarin</institution>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2026-04-24T23:48:07+03:00">
    <day>24</day>
    <month>04</month>
    <year>2026</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-04-24T23:48:07+03:00">
    <day>24</day>
    <month>04</month>
    <year>2026</year>
   </pub-date>
   <volume>19</volume>
   <issue>1</issue>
   <fpage>61</fpage>
   <lpage>71</lpage>
   <history>
    <date date-type="received" iso-8601-date="2026-04-08T00:00:00+03:00">
     <day>08</day>
     <month>04</month>
     <year>2026</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/120335/view">https://naukaru.ru/en/nauka/article/120335/view</self-uri>
   <abstract xml:lang="ru">
    <p>Снижение эффективной поверхности отражения современных летательных аппаратов, особенно малоразмерных, является одной из технических особенностей современных конструкторских решений и может приводить к существенному снижению качества управления воздушным движением, а, следовательно, и к снижению уровня безопасности полетов. Решение задачи обнаружения и определения местоположения малоразмерных целей существенно осложняется помеховой обстановкой, складывающейся в районе современного аэродрома. В статье представлен анализ наиболее известных существующих подходов к формированию нелинейного закона изменения частоты для широкополосных частотно-модулированных зондирующих радиосигналов сигналов, которые при условии сохранения принципа стационарности фазы, обеспечивают минимизацию уровня боковых лепестков отклика согласованного фильтра в системе первичной обработки на приемной стороне. Такие сигналы обладают улучшенными корреляционными свойствами и обеспечивают эффективное решение задач обнаружения, разрешения и оценки параметров движения целей в наземных радиолокационных системах и комплексах управления воздушным движением. В заключительной части статьи сформированы требования, предъявляемые к новым синтезируемым сигналам с нелинейной частной модуляцией, в интересах достижения требуемых качественных и количественных характеристик, таких как: уровень боковых лепестков функции неопределенности, ширина её главного лепестка и уровень искажений спектра сигнала при доплеровском смещении цели.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>A decrease in the effective reflection surface of modern aircraft, especially small-sized ones, is one of the technical features of modern design solutions and can lead to a significant decrease in the quality of air traffic control, and, consequently, to a decrease in flight safety. Solving the problem of detecting and locating small targets is significantly complicated by the interference situation in the area of a modern airfield. The article presents an analysis of the most well-known existing approaches to the formation of a nonlinear frequency law for broadband frequency-modulated probing radio signals, which, while maintaining the principle of phase stationarity, minimize the level of side lobes of the matched filter response in the primary processing system on the receiving side. Such signals have improved correlation properties and provide an effective solution to the problems of detecting, resolving, and evaluating target motion parameters in ground-based radar systems and air traffic control systems. In the final part of the article, the requirements for new synthesized signals with nonlinear partial modulation are formed in the interests of achieving the required qualitative and quantitative characteristics, such as: the level of the side lobes of the uncertainty function, the width of its main lobe and the level of distortion of the signal spectrum with a Doppler shift of the target.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>управление воздушным движением</kwd>
    <kwd>первичная обработка</kwd>
    <kwd>сигнал с нелинейной частотной модуляцией</kwd>
    <kwd>отношение сигнал/шум</kwd>
    <kwd>боковые лепестки</kwd>
    <kwd>функция неопределенности</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>air traffic control</kwd>
    <kwd>primary processing</kwd>
    <kwd>signal with nonlinear frequency modulation</kwd>
    <kwd>signal-to-noise ratio</kwd>
    <kwd>side lobes</kwd>
    <kwd>uncertainty function</kwd>
   </kwd-group>
  </article-meta>
 </front>
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  <p></p>
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