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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35596/1729-7648-2026-24-1-51-59</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-4298</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Анализ информативности признаков распознавания малоразмерных беспилотных летательных аппаратов по реальным записям импульсного радиолокатора S-диапазона</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the Information Content of Recognition Features of Small-Sized Unmanned Aerial Vehicles Based on Real S-Band Pulse Radar Recordings</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Храменков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Khramiankou</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Храменков Андрей Сергеевич - канд. техн. наук, доц., зам. нач. каф. автоматики, радиолокации и приемо-передающих устройств</p><p>220057, Минск, просп. Независимости, 220</p><p>Тел.: +375 17 287-42-46 </p></bio><bio xml:lang="en"><p>Andrei Khramiankou - Сand. Sci. (Tech.), Associate Professor, Deputy Head of the Department of Automatics, Radar-Location and Send-Receive Devices</p><p>220057, Minsk, Nezavisimosti Ave., 220</p><p>Тel.: +375 17 287-42-46 </p></bio><email xlink:type="simple">xras.tech@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чигряй</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Chyhrai</surname><given-names>V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>адъюнкт каф. автоматики, радиолокации и приемо-передающих устройств</p><p>Минск</p></bio><bio xml:lang="en"><p>Vasil Chyhrai - Adjunct of the Department of Automatics, Radar-Location and Send-Receive Devices</p><p>Minsk </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Военная академия Республики Беларусь</institution></aff><aff xml:lang="en"><institution>Military Academy of the Republic of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>04</day><month>03</month><year>2026</year></pub-date><volume>24</volume><issue>1</issue><fpage>51</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Храменков А.С., Чигряй В.Г., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Храменков А.С., Чигряй В.Г.</copyright-holder><copyright-holder xml:lang="en">Khramiankou A., Chyhrai V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.bsuir.by/jour/article/view/4298">https://doklady.bsuir.by/jour/article/view/4298</self-uri><abstract><p>Разработан и исследован подход к анализу классификационных признаков радиолокационного распознавания малоразмерных беспилотных летательных аппаратов на основе спектральных радиолокационных портретов, сформированных по реальным записям импульсного радара S-диапазона. Рассмот­ рена задача выделения и оценки информативности сигнальных признаков, доступных для практической реализации в радиолокаторах обнаружения и сопровождения. Проведена обработка экспериментальных данных и сформирован набор физически интерпретируемых признаков, отражающих свойства планерной составляющей и вторичной микродоплеровской модуляции отраженного сигнала. Для количественной оценки разделяющей способности признаков использованы критерий Фишера, количество информации и нормированные межклассовые расстояния. Установлено, что наибольшей информативностью обладают признаки микродоплеровской природы, обеспечивающие устойчивое разделение мультикоптерных и гибридных типов беспилотных летательных аппаратов.</p></abstract><trans-abstract xml:lang="en"><p>An approach to analyzing classification features for radar recognition of small unmanned aerial vehic­ les based on spectral radar portraits generated from real S-band pulsed radar recordings is developed and stu­ died. The problem of extracting and assessing the information content of signal features available for practical implementation in detection and tracking radars is considered. Experimental data were processed, and a set of physically interpretable features is generated, reflecting the properties of the airframe component and secondary micro-Doppler modulation of the reflected signal. To quantitatively evaluate the separating ability of features, the Fisher criterion, the amount of information and normalized interclass distances were used. It is established that micro-Doppler features possess the greatest information content, ensuring stable separation of multicopter and hybrid types of unmanned aerial vehicles.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>малоразмерные беспилотные летательные аппараты</kwd><kwd>радиолокационное распознавание</kwd><kwd>спектральный радиолокационный портрет</kwd><kwd>вторичная модуляция</kwd><kwd>классификационные признаки</kwd><kwd>критерий Фишера</kwd><kwd>количество информации</kwd><kwd>межклассовое расстояние</kwd></kwd-group><kwd-group xml:lang="en"><kwd>small unmanned aerial vehicles</kwd><kwd>radar recognition</kwd><kwd>spectral radar portrait</kwd><kwd>secondary modulation</kwd><kwd>classification features</kwd><kwd>Fisher criterion</kwd><kwd>amount of information</kwd><kwd>interclass distance</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Гейстер, С. Р. 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