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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">gyroscopy</journal-id><journal-title-group><journal-title xml:lang="ru">Гироскопия и навигация</journal-title><trans-title-group xml:lang="en"><trans-title>Giroskopiya i Navigatsiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-7035</issn><issn pub-type="epub">2075-0927</issn><publisher><publisher-name>AO «Концерн «ЦНИИ «Электроприбор»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17285/0869-7035.0013</article-id><article-id custom-type="elpub" pub-id-type="custom">gyroscopy-267</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>Обнаружение радиосигналов спутниковых навигационных систем бескодовым методом</article-title><trans-title-group xml:lang="en"><trans-title>Codeless Acquisition of Satellite Navigation System Signals</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>Бахолдин</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakholdin</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бахолдин Владимир Станиславович. Кандидат технических наук, доцент</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гаврилов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gavrilov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гаврилов Денис Александрович. Кандидат технических наук, старший преподаватель</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Добриков</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobrikov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Добриков Владимир Анатольевич. Кандидат технических наук, доцент</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>В. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>V. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванов Вадим Федорович. Старший преподаватель</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Военно-космическая академия имени А.Ф. Можайского (С.-Петербург)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mozhaiskiy Military Space Academy, St. Petersburg, Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Военно-космическая академия имени А.Ф. Можайского (С.-Петербург).</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mozhaiskiy Military Space Academy, St. Petersburg, Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>18</day><month>11</month><year>2025</year></pub-date><volume>27</volume><issue>4</issue><fpage>147</fpage><lpage>161</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бахолдин В.С., Гаврилов Д.А., Добриков В.А., Иванов В.Ф., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Бахолдин В.С., Гаврилов Д.А., Добриков В.А., Иванов В.Ф.</copyright-holder><copyright-holder xml:lang="en">Bakholdin V.S., Gavrilov D.A., Dobrikov V.A., Ivanov V.F.</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://www.gyroscopy.ru/jour/article/view/267">https://www.gyroscopy.ru/jour/article/view/267</self-uri><abstract><p>Получены и проанализированы теоретические характеристики бескодового обнаружения сигналов навигационной системы GPS в диапазоне L1. Представленные результаты позволяют обоснованно выбирать интервал когерентного накопления, рассчитывать пороги обнаружения и оценивать его вероятность. С использованием программного приемника экспериментально подтверждена работоспособность и применимость на практике метода бескодового обнаружения навигационных сигналов по частоте.</p></abstract><trans-abstract xml:lang="en"><p>The paper analyzes the obtained theoretical characteristics of codeless acquisition of GPS signals in L1 band. The presented results make it possible to adequately select an interval of coherent integration, to calculate the detection thresholds and to estimate its probability. The efficiency and applicability of the method of frequency-based codeless acquisition of navigation signals have been experimentally confirmed using a programmed receiver.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Глобальная навигационная спутниковая система</kwd><kwd>бескодовый прием и обнаружение навигационных сигналов</kwd><kwd>характеристики обнаружения</kwd><kwd>быстрое преобразование Фурье.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Global navigation satellite system</kwd><kwd>codeless acquisition of navigation signals</kwd><kwd>detection characteristics</kwd><kwd>fast Fourier transform.</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">Woo, K.T., Optimum Semi-Codeless Carrier Phase Tracking of L2, Proc. of the ION GPS, Nashville, Tennessee, 1999, pp. 289–305.</mixed-citation><mixed-citation xml:lang="en">Woo, K.T., Optimum semi-codeless carrier phase tracking of L2, Proc. of the ION GPS, Nashville, Tennessee, 1999, pp. 289–305.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Linty, N., Codeless Tracking Algorithms for GNSS Software Receivers, Politecnico di Torino, Italy, 2010.</mixed-citation><mixed-citation xml:lang="en">Linty, N., Codeless Tracking Algorithms for GNSS Software Receivers, Politecnico di Torino, Italy, 2010.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Borio, D., Squaring and cross-correlation codeless tracking: analysis and generalization, IET Radar, Sonar&amp; Navigation, 2011, vol. 5, pp. 958–969.</mixed-citation><mixed-citation xml:lang="en">Borio, D., Squaring and cross-correlation codeless tracking: analysis and generalization, IET Radar, Sonar &amp; Navigation, 2011, vol. 5, pp. 958–969.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">O’Driscoll, C., Curran, J.T., Codeless Code Tracking of BOC Signals, Proc. of IONGNSS2016. 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