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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2020-3-43-48</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-1751</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>РАДИОТЕХНИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIO MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Исследование межчастотных задержек сигналов на борту навигационных космических аппаратов ГЛОНАСС</article-title><trans-title-group xml:lang="en"><trans-title>A Study Interfrequency Onboard Delays of Signals Navigation Satellites GLONASS</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>Карауш</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Karaush</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. п. Менделеево, Московская обл.</p></bio><bio xml:lang="en"><p>Ekaterina A. Karaush</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">khanykova_ea@vniiftri.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>Печерица</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pecheritsa</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. п. Менделеево, Московская обл.</p></bio><bio xml:lang="en"><p>Dmitry S. Pecheritsa</p><p>Mendeleevo, Moscow region</p></bio><email xlink:type="simple">pecheritsa_ds@vniiftri.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Unitary Enterprise Russian Metrological Institute of Technical Physics and Radio Engineering</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2023</year></pub-date><volume>0</volume><issue>3</issue><fpage>43</fpage><lpage>48</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/1751">https://www.izmt.ru/jour/article/view/1751</self-uri><abstract><p>Рассмотрена задача оценивания межчастотных задержек сигналов навигационных космических аппаратов системы ГЛОНАСС. Такие задержки излучения сигнала в радиочастотном тракте навигационных космических аппаратов являются источником инструментальной погрешности псевдодальномерных  измерений. Предложен метод оценки межчастотных задержек сигналов, основанный на расчёте первых разностей псевдодальномерных измерений по навигационным космическим аппаратам, взаимное угловое положение которых отличается не более чем на 1°. Проведен эксперимент по оценке межчастотных задержек сигналов на основе разработанного метода. Эксперимент основан на использовании калиброванной навигационной  ппаратуры потребителя для разделения погрешностей, вызванных задержками сигналов в приёмнике и навигационном космическом аппарате. Также для обеспечения наименьшего влияния ионосферного слоя Земли в обработку включены только те измерения, которые получены при малом значении полной электронной концентрации TEC. В качестве исходных данных использовали псевдодальномерные измерения по сигналам навигационных космических аппаратов систем ГЛОНАСС и GPS. Результаты оценивания для всех космических аппаратов орбитальной группировки системы ГЛОНАСС сравнены с формулярными значениями, предоставленными в составе навигационного кадра. Проанализированы результаты экспериментальных исследований, получены значения среднеквадратических отклонений задержек орбитальной группировки ГЛОНАСС. Для подтверждения адекватности результатов проведена проверка на внутреннюю сходимость результатов и определена погрешность разработанного метода оценки межчастотных задержек навигационных космических аппаратов.</p></abstract><trans-abstract xml:lang="en"><p>The problem of interfrequency signal delays estimation of GLONASS system navigation satellite is considered Such delays in the radio-frequency massage of navigation satellites are the source of the instrumental error of pseudorange measurements. The estimation method of interfrequency signal delays is proposed, based on the calculation of first differences of pseudorange measurements on navigation satellites, the relative position of which diff ers by no more than 1°. The experiment on estimation of inter-frequency delays signal on the basis of the developed method was conducted. The experiment is based on the use of calibrated navigation receiver to separate errors caused by signal delays in the receiver and navigation satellite. Also, to minimize the effects of the Earth's ionosphere layer navigation signal delay, only those measurements taken at a low Total Electronic Concentration TEC are included in the processing. Pseudorange measurements using GLONASS and GPS navigation satellites signals were used as the main source data. The results of the estimation for all GLONASS orbital group satellites were compared with the form values provided in the navigation massage. The results of experimental research have been analyzed and the values of standard deviation of GLONASS orbital group delays have been obtained. To confirm the adequacy of the results was checked for internal convergence of the results and determined the error of the developed method for assessing the interfrequency delays of navigation spacecraft.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>глобальные навигационные спутниковые системы</kwd><kwd>ГЛОНАСС</kwd><kwd>GPS</kwd><kwd>задержка навигационного сигнала</kwd><kwd>навигационный космический аппарат</kwd><kwd>навигационное сообщение</kwd><kwd>ионосферная задержка сигнала</kwd><kwd>псевдодальномерные измерения.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>global navigation satellite system</kwd><kwd>GLONASS</kwd><kwd>navigation signal delay</kwd><kwd>navigation satellite</kwd><kwd>navigation message</kwd><kwd>ionosphere signal delay</kwd><kwd>pseudorange measurements</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">Hofmann-Wellenhof B., Lichtenegger H., Collins J., Global Positioning System. 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