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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-259</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>СПЕКТРАЛЬНАЯ ЗАВИСИМОСТЬ ПРОСТРАНСТВЕННО-СКОРОСТНОГО РАЗРЕШЕНИЯ ЛАЗЕРНОЙ ДОПЛЕРОВСКОЙ ВИБРОМЕТРИИ</article-title><trans-title-group xml:lang="en"><trans-title>WAVELENGTH DEPENDENCE OF DISPLACEMENT AND VELOCITY RESOLUTION IN LASER DOPPLER VIBROMETRY</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>Esfahani</surname><given-names>G. .</given-names></name><name name-style="western" xml:lang="en"><surname>Esfahani</surname><given-names>G. .</given-names></name></name-alternatives><email xlink:type="simple">ghorban.esfenani@gmail.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>Golnabi</surname><given-names>H. .</given-names></name><name name-style="western" xml:lang="en"><surname>Golnabi</surname><given-names>H. .</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>M. Talebian</surname><given-names>D. .</given-names></name><name name-style="western" xml:lang="en"><surname>M. Talebian</surname><given-names>D. .</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Исламский университет Азад</institution></aff><aff xml:lang="en"><institution>Islamic Azad University, North Tehran Branch</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Университет Имама Хоссейна</institution></aff><aff xml:lang="en"><institution>Imam Hossein Comprehensive University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>85</volume><issue>3</issue><fpage>467</fpage><lpage>473</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Esfahani G..., Golnabi H..., M. Talebian D..., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Esfahani G..., Golnabi H..., M. Talebian D...</copyright-holder><copyright-holder xml:lang="en">Esfahani G..., Golnabi H..., M. Talebian D...</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://zhps.ejournal.by/jour/article/view/259">https://zhps.ejournal.by/jour/article/view/259</self-uri><abstract><p>Для расчета спектральной зависимости разрешения по скорости и по смещению в технологии лазерной доплеровской виброметрии (ЛДВ) используется теоретический подход. Рассматривается математическое описание типичной ЛДВ-системы в гетеродинном исполнении. В качестве основных источников шума принимаются тепловой и дробовой шумы. Минимальные смещение и скорость мишени, которые генерируют сигнал, эквивалентный шуму, считаются разрешением по смещению и скорости. Между длиной волны лазера и указанными разрешениями имеет место линейная зависимость, если все другие рабочие параметры системы ЛДВ сохраняются постоянными. Полученные результаты хорошо согласуются с данными экспериментальных исследований других авторов.</p></abstract><trans-abstract xml:lang="en"><p>A theoretical approach is used to calculate wavelength dependence of displacement and velocity resolution in the technology of laser Doppler vibrometry (LDV). Mathematical description of a typical LDV system in the heterodyne arrangement is considered in this regard. Thermal noise and shot noise are assumed as the primary source of noise. Minimum target displacement and velocity which produce noise equivalent signal are considered as displacement and velocity resolution respectively. A theoretical linear relationship between laser wavelength and the mentioned resolutions is obtained when all other operational parameters of the LDV system are kept constant. The results of the present research are in good agreement with the earlier experimental researches conducted by others.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лазерная доплеровская виброметрия</kwd><kwd>пространственное разрешение</kwd><kwd>разрешение по скорости</kwd><kwd>длина волны лазера</kwd><kwd>отношение сигнал/шум</kwd><kwd>эквивалентный шумовой сигнал</kwd><kwd>laser Doppler vibrometry</kwd><kwd>displacement resolution</kwd><kwd>velocity resolution</kwd><kwd>laser wavelength</kwd><kwd>signal to noise ratio</kwd><kwd>noise equivalent signal</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">S. Rothberg, M. Allen, P. Castellini, D. Di Maio, J. Dirckx, D. Ewins, B. J. Halkon, P. 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