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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">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2023-66-7-576-584</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-135</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>СИСТЕМНЫЙ АНАЛИЗ, УПРАВЛЕНИЕ И ОБРАБОТКА ИНФОРМАЦИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SYSTEM ANALYSIS, MANAGEMENT AND INFORMATION PROCESSING</subject></subj-group></article-categories><title-group><article-title>Предварительная обработка данных спутникового навигационного приемника в задаче трехмерной томографии верхней ионосферы</article-title><trans-title-group xml:lang="en"><trans-title>Preliminary processing of data from a satellite navigation receiver in the problem of three-dimensional upper ionosphere tomography</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>Титов</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Titov</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никита Сергеевич Титов - межвузовская кафедра космических исследований, НИЛ-102 „Перспективные фундаментальные и прикладные космические исследования на базе наноспутников“; инженер-программист</p><p>Самара</p></bio><bio xml:lang="en"><p>Nikita S. Titov - Inter-University Department of the Space Researches; Research Laboratory 102 for Perspective Fundamental and Applied Space Research Based on Nanosatellites; Engineer-Programmer</p><p>Samara</p></bio><email xlink:type="simple">titov.ns@ssau.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>Николаев</surname><given-names>П. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaev</surname><given-names>P N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петр Николаевич Николаев -канд. физ.-мат. наук;  межвузовская кафедра космических исследований, НИЛ-102 „Перспективные фундаментальные и прикладные космические исследования на базе наноспутников“; ст. науч. сотрудник</p><p>Самара</p></bio><bio xml:lang="en"><p>Pyotr N. Nikolaev - PhD; Inter-University Department of the Space Researches; Research Laboratory 102 for Perspective Fundamental and Applied Space Research Based on Nanosatellites; Senior Researcher</p><p>Samara</p></bio><email xlink:type="simple">nikolaev.pn@ssau.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский национальный исследовательский университет им. акад. С. П. Королева</institution></aff><aff xml:lang="en"><institution>Samara University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>27</day><month>11</month><year>2024</year></pub-date><volume>66</volume><issue>7</issue><fpage>576</fpage><lpage>584</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/135">https://pribor.ifmo.ru/jour/article/view/135</self-uri><abstract><p>Рассмотрена задача трехмерной томографии верхней ионосферы по сигналам глобальных навигационных спутниковых систем, принимаемым на навигационном приемнике низкоорбитального спутника. Представлена методика предварительной обработки данных спутникового навигационного приемника, которая заключается в прогнозе координат центров масс низкоорбитального спутника и навигационных спутников, оценке полного электронного содержания ионосферы с последующей отбраковкой выбросов, а также в выборе области реконструкции. Методика апробирована на данных, полученных с навигационного приемника космического аппарата из группировки метеорологических спутников FormoSat-7/COSMIC-2. Результаты оценки полного электронного содержания позволяют применить алгоритм непрерывного решения задачи трехмерной томографии ионосферы, что, в свою очередь, позволяет оценить электронную концентрацию ионосферы в верхней ионосфере. </p></abstract><trans-abstract xml:lang="en"><p>The problem of three-dimensional tomography of the upper ionosphere based on the signals of global navigation satellite systems obtained by the navigation receiver of a low-orbit satellite is considered. A method for preliminary processing of data from a satellite navigation receiver is presented, which consists in predicting the coordinates of the centers of mass of a low-orbiting satellite and navigation satellites, estimating the total electron content of the ionosphere with subsequent rejection of emissions, and also choosing a reconstruction area. The technique was tested with data obtained from the navigation receiver of the spacecraft from the FormoSat-7/COSMIC-2 meteorological satellite constellation. The results of the total electron content estimation make it possible to apply the algorithm for the continuous solution of the problem of three-dimensional tomography of the ionosphere, which, in turn, allows us to estimate the electron concentration of the ionosphere in the upper ionosphere.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ионосфера</kwd><kwd>наноспутник</kwd><kwd>томография</kwd><kwd>псевдодальность</kwd><kwd>фазовые измерения</kwd><kwd>полное электронное содержание</kwd><kwd>COSMIC-2</kwd><kwd>GPS</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ionosphere</kwd><kwd>nanosatellite</kwd><kwd>tomography</kwd><kwd>pseudo-range</kwd><kwd>phases measurements</kwd><kwd>TEC</kwd><kwd>COSMIC-2</kwd><kwd>GPS</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена в рамках проекта 0777-2020-0018, финансируемого из средств государственного задания победителям конкурса научных лабораторий образовательных организаций высшего образования, подведомственных Министерству науки и высшего образования РФ.</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the project 0777-2020-0018, financed from the funds of the state task for the winners of the competition of scientific laboratories of educational institutions of higher education, subordinated to the Ministry of Science and Higher Education of the Russian Federation.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Parrot M., Tramutoli V., Liu T. 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