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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 custom-type="elpub" pub-id-type="custom">bsuir-1096</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>ЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS</subject></subj-group></article-categories><title-group><article-title>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ АЛГОРИТМОВ ПОСТРОЕНИЯ РАДИОЛОКАЦИОННЫХ ИЗОБРАЖЕНИЙ ВИНТОВ И СПОСОБА ИЗМЕРЕНИЯ ЧАСТОТЫ СЛЕДОВАНИЯ ЛОПАСТЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>Experimental studies of radar image construction algorithms for propellers and measurement method for repetition frequencies of the blades</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>Гейстер</surname><given-names>С. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Heister</surname><given-names>S. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор, главный научный сотрудник</p></bio><bio xml:lang="en"><p>D.Sci., professor, main researcher</p></bio><email xlink:type="simple">hsr_1960@yahoo.com</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>Нгуен</surname><given-names>Т. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Nguyen</surname><given-names>T. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры информационных радиотехнологий</p></bio><bio xml:lang="en"><p>PG student of information radiotechnologies department</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт Вооруженных Сил Республики Беларусь</institution></aff><aff xml:lang="en"><institution>Research Institute of the Armed Forces of the Republic of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian state university of informatics and radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>04</day><month>06</month><year>2019</year></pub-date><volume>0</volume><issue>4</issue><fpage>72</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гейстер С.Р., Нгуен Т.Т., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Гейстер С.Р., Нгуен Т.Т.</copyright-holder><copyright-holder xml:lang="en">Heister S.R., Nguyen T.T.</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/1096">https://doklady.bsuir.by/jour/article/view/1096</self-uri><abstract><p>В [<xref ref-type="bibr" rid="cit1">1</xref>] предложены алгоритмы построения радиолокационных изображений (РЛИ) винтов летательных аппаратов, принадлежащих к классам «вертолет» и «винтовой самолет». Алгоритмы предназначены для реализации в радиолокационном датчике с обращенным синтезом апертуры антенны. Принципиальным условием качественного построения РЛИ винтов является точное измерение частот их вращения. В [<xref ref-type="bibr" rid="cit2">2</xref>] предложен способ измерения частоты следования лопастей винта на основе свертки спектра «вторичной» модуляции отраженного сигнала винта. В данной работе рассматриваются результаты экспериментальных исследований способа измерения частоты следования лопастей винта и алгоритмов формирования РЛИ винтов типовых маловысотных летательных аппаратов (вертолетов и винтовых самолетов).</p></abstract><trans-abstract xml:lang="en"><p>The radar image construction algorithms for propellers of aerial vehicles belonging to the classes «helicopter» and «propeller-driven aircraft» were proposed in [<xref ref-type="bibr" rid="cit1">1</xref>]. The algorithms are designed to be implemented in a radar sensor with inverse synthesis of antenna aperture. The fundamental condition for the qualitative construction of radar images of the propellers is accurate measurement of their rotation frequency. The measurement method for the repetition frequency of the propeller blades on the base of the convolution of the spectrum of the «secondary» modulation of the signal reflected from propeller was proposed in [<xref ref-type="bibr" rid="cit2">2</xref>]. This paper discusses the results of experimental studies of the measurement method for repetition frequency of the propeller blades and of the radar images construction algorithms of propellers of typical low-altitude aircraft (helicopters and propeller-driven aircrafts).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>частота вращения</kwd><kwd>частота следования лопастей</kwd><kwd>несущий винт</kwd><kwd>рулевой винт</kwd><kwd>тянущий винт</kwd><kwd>вертолет</kwd><kwd>винтовой самолет</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rotational frequency</kwd><kwd>blade repetition frequency</kwd><kwd>main rotor</kwd><kwd>tail rotor</kwd><kwd>aircraft propeller</kwd><kwd>helicopter</kwd><kwd>propeller-driven fixed-wing aircraft</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., Нгуен Т.Т. 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