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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">pimi</journal-id><journal-title-group><journal-title xml:lang="ru">Приборы и методы измерений</journal-title><trans-title-group xml:lang="en"><trans-title>Devices and Methods of Measurements</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-9506</issn><issn pub-type="epub">2414-0473</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">pimi-69</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>Методы измерений, контроля, диагностики</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Methods of measurements, monitoring, diagnostics</subject></subj-group></article-categories><title-group><article-title>МЕТОД ОЦЕНКИ ЧАСТОТНЫХ СВОЙСТВ ПРЕДВАРИТЕЛЬНО ТЕРМОИЗОЛИРОВАННЫХ ТРУБ ДЛЯ МОНИТОРИНГА СОСТОЯНИЯ ТЕПЛОСЕТЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>METHOD OF ESTIMATION FREQUENCY PROPERTIES OF THE PREINSULATED PIPES FOR MONITORING THE STATUS OF HEATING NETWORKS</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>Талецкий</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Taletskiy</surname><given-names>E. N.</given-names></name></name-alternatives><email xlink:type="simple">back147@yandex.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2015</year></pub-date><volume>0</volume><issue>1</issue><fpage>99</fpage><lpage>105</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Талецкий Е.Н., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Талецкий Е.Н.</copyright-holder><copyright-holder xml:lang="en">Taletskiy E.N.</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://pimi.bntu.by/jour/article/view/69">https://pimi.bntu.by/jour/article/view/69</self-uri><abstract><p>Предложен приближенный метод предварительной оценки частотных свойств неприспособленной направляющей системы для организации мониторинга состояния предварительно термоизолированных труб. Направляющая система образована элементами труб, помещенных в среду с потерями (грунт). Проведен теоретический анализ, приведены частотные зависимости компонентов постоянной распространения – коэффициента затухания и коэффициента фазы, позволяющие использовать эти характеристики системы для мониторинга состояния теплосетей.</p></abstract><trans-abstract xml:lang="en"><p>Proposed approximate method for the preliminary assessment of the frequency properties unadapted guiding system for monitoring the status of the organization of preinsulated pipes. Guide system elements  formed  tubes  placed  in  a  lossy  medium  (soil).  A  theoretical  analysis  shows  the  frequency dependence of the propagation constant components: the damping coefficient and the phase coefficient, take advantage of these characteristics of the system for monitoring the status heating networks.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мониторинг</kwd><kwd>трубопровод</kwd><kwd>ПИ-труба</kwd><kwd>частотная характеристика</kwd><kwd>поверхностный импеданс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>monitoring</kwd><kwd>pipeline</kwd><kwd>preinsulated pipe</kwd><kwd>frequency characteristic</kwd><kwd>surface impedance</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">Государственный стандарт Республики Беларусь СТБ 1295-2001. 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