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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2025-69-1-64-75</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1237</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Моделирование радиолокационных сигналов беспилотных летательных аппаратов при негауссовских распределениях комплексных амплитуд</article-title><trans-title-group xml:lang="en"><trans-title>Simulating of radar signals of unmanned aerial vehicles for non-Gaussian distributions of complex amplitudes</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>Костромицкий</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostromitsky</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Костромицкий Сергей Михайлович – член-корреспондент, д-р техн. наук, профессор, директор</p><p>ул. П. Бровки, 15/5, 220072, Минск</p></bio><bio xml:lang="en"><p>Kostromitsky Sergey M. – Corresponding Member,  D. Sc. (Engineering), Professor, Director</p><p>15/5, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">info@radiotechnika.by</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>Нефёдов</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nefedov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нефёдов Денис Сергеевич – канд. техн. наук, доцент, заместитель начальника научно-исследовательской части</p><p>пр. Независимости, 220, 220057, Минск</p></bio><bio xml:lang="en"><p>Nefedov Denis S. – Ph. D. (Engineering), Associate Professor, Deputy Head of the Scientific-Research Department</p><p>220, Nezavisimosti Ave., 220057, Minsk</p></bio><email xlink:type="simple">varb_nefedovds@tut.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дятко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyatko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дятко Александр Аркадьевич – канд. техн. наук, доцент</p><p>ул. Свердлова, 13а, 220006, Минск</p></bio><bio xml:lang="en"><p>Dyatko Aleksandr A. – Ph. D. (Engineering), Associate Professor</p><p>13а, Sverdlov Str., 220006, Minsk</p></bio><email xlink:type="simple">dyatko_a@tut.by</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Центр радиотехники Национальной академии наук</institution></aff><aff xml:lang="en"><institution>Radio Engineering Center of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><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><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Белорусский государственный технологический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Technological University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>27</day><month>02</month><year>2025</year></pub-date><volume>69</volume><issue>1</issue><fpage>64</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Костромицкий С.М., Нефёдов Д.С., Дятко А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Костромицкий С.М., Нефёдов Д.С., Дятко А.А.</copyright-holder><copyright-holder xml:lang="en">Kostromitsky S.M., Nefedov D.S., Dyatko A.A.</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.belnauka.by/jour/article/view/1237">https://doklady.belnauka.by/jour/article/view/1237</self-uri><abstract><p>Разработана структура и алгоритмы функционирования имитатора радиолокационных сигналов, отраженных от малоразмерных беспилотных летательных аппаратов (БПЛА). Особенностью имитатора является возможность формирования произвольно коррелированных реализаций входного воздействия радиолокационной станции для случаев, когда случайная амплитуда отраженного сигнала (ОС) имеет распределение Рэлея, Накагами, Вейбулла или логнормальное распределение. Представлены аналитические выражения для расчета параметров плотности распределения вероятности, а также формирования отсчетов случайной амплитуды ОС с заданным законом распределения из отсчетов исходных реализаций гауссовского процесса. Предусмотрена нормировка средней мощности ОС к среднему значению эффективной поверхности рассеяния моделируемой цели и обеспечение заданного времени корреляции флуктуаций комплексных амплитуд ОС. Параметры формируемых реализаций ОС соответствуют значениям реальных радиолокационных характеристик малоразмерных БПЛА, полученных экспериментально. Применением предложенного имитатора является анализ эффективности вновь разрабатываемых и изве стных алгоритмов обнаружения БПЛА методом математического моделирования.</p></abstract><trans-abstract xml:lang="en"><p>The structure and functioning algorithms of the simulator of radar signals reflected from small-sized unmanned aerial vehicles (UAVs) have been developed. A specific feature of the simulator is the ability to generate arbitrarily correlated signal implementations of the radar input influence for the cases where the random amplitude of the reflected signal (RS) has a Rayleigh, Nakagami, Weibull or lognormal distribution. Analytical expressions are presented for calculating the parameters of the probability density function, as well as generating samples of the random amplitude of the RS with a given distribution law from the samples of the initial implementations of the Gaussian process. Provision is made for normalizing the RS average power to the average value of the modeled target RCS and a specified correlation time for fluctuations of RS complex amplitudes is ensured. The parameters of the generated RS implementations correspond to the values of real radar characteristics of small-sized UAVs obtained experimentally. The application of the proposed simulator is to analyze the effectiveness of newly developed and known UAV detection algorithms using the mathematical modeling method.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>радиолокационная станция</kwd><kwd>малоразмерный беспилотный летательный аппарат</kwd><kwd>отраженный сигнал</kwd><kwd>случайная амплитуда</kwd><kwd>плотность распределения вероятности</kwd><kwd>математическое моделирование</kwd><kwd>время корреляции флуктуаций</kwd></kwd-group><kwd-group xml:lang="en"><kwd>radar</kwd><kwd>small-sized unmanned aerial vehicle</kwd><kwd>reflected signal</kwd><kwd>random amplitude</kwd><kwd>probability density function</kwd><kwd>mathematical modeling</kwd><kwd>fluctuation correlation time</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">Computer simulation of aerial target radar scattering, recognition, detection, and tracking / ed. 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