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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solnechno-Zemnaya Fizika</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solnechno-Zemnaya Fizika</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2712-9640</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">113871</article-id>
   <article-id pub-id-type="doi">10.12737/szf-121202607</article-id>
   <article-id pub-id-type="edn">jlpgdi</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Результаты  исследований</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Results of current research</subject>
    </subj-group>
    <subj-group>
     <subject>Результаты  исследований</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Technique of ionospheric parameters automatic determination from data of vertical sounding with a continuous chirp signal</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Методика автоматического определения параметров ионосферы по данным вертикального зондирования непрерывным ЛЧМ-сигналом</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1371-6855</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Пономарчук</surname>
       <given-names>Сергей Николаевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ponomarchuk</surname>
       <given-names>Sergey Nikolaevich</given-names>
      </name>
     </name-alternatives>
     <email>spon@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6472-5006</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Грозов</surname>
       <given-names>Виктор Петрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Grozov</surname>
       <given-names>Viktor Petrovich</given-names>
      </name>
     </name-alternatives>
     <email>grozov@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт солнечно-земной физики СО РАН</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт солнечно-земной физики СО РАН</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2026-03-25T13:15:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2026</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-03-25T13:15:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2026</year>
   </pub-date>
   <volume>12</volume>
   <issue>1</issue>
   <fpage>55</fpage>
   <lpage>63</lpage>
   <history>
    <date date-type="received" iso-8601-date="2025-06-27T00:00:00+03:00">
     <day>27</day>
     <month>06</month>
     <year>2025</year>
    </date>
    <date date-type="accepted" iso-8601-date="2025-09-22T00:00:00+03:00">
     <day>22</day>
     <month>09</month>
     <year>2025</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/113871/view">https://naukaru.ru/en/nauka/article/113871/view</self-uri>
   <abstract xml:lang="ru">
    <p>Представлена методика определения параметров ионосферы на основе автоматической интерпретации ионограмм вертикального зондирования ионосферы (ВЗ). Интерпретация ионограмм проводится по точкам со значимой амплитудой, выделенным при вторичной обработке данных, с использованием результатов моделирования высотно-частотной характеристики (ВЧХ) сигналов ВЗ. Разработаны алгоритмы выделения треков ВЧХ сигналов, отраженных от E-, F1- и F2-слоев ионосферы, на основе анализа амплитудных характеристик сигналов и построения гистограмм распределения точек, попадающих по задержке сигнала в модельную маску ВЧХ при ее перемещении по ионограмме. Отдельно реализован алгоритм выделения треков сигналов, отраженных от спорадических слоев. По сформированной ВЧХ ВЗ определяются ионосферные параметры и рассчитывается профиль электронной концентрации.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We present a technique for determination of ionospheric parameters based on automatic interpretation of vertical sounding (VS) ionograms. Ionograms are interpreted using points with significant amplitude, which were detected after secondary data processing with results of modelling of VS signal height-frequency characteristic (HFC). We have developed algorithms to extract HFC tracks of signals reflected from the E, F1, and F2 layers. These algorithms involve analyzing signal amplitude characteristics and plotting distribution histograms of points falling into the HFC model mask when it is moved over the ionogram. The algorithm to detect tracks of signals reflected from sporadic layers is implemented separately. From the resultant VS HFC, we can estimate ionospheric parameters and calculate the electron density profile.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>распространение радиоволн</kwd>
    <kwd>вертикальное зондирование ионосферы</kwd>
    <kwd>ионограмма</kwd>
    <kwd>профиль электронной концентрации</kwd>
    <kwd>ЛЧМ-сигнал</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>radio wave propagation</kwd>
    <kwd>ionospheric vertical sounding</kwd>
    <kwd>ionogram</kwd>
    <kwd>electron density profile</kwd>
    <kwd>chirp signal</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Минобрнауки (субсидия № 075-ГЗ/Ц3569/278).</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Subsidy No. 075-GZ/Ts3569/278).</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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