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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solar-Terrestrial Physics</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solar-Terrestrial Physics</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика / Solnechno-Zemnaya Fizika / Solar-Terrestrial Physics</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">55048</article-id>
   <article-id pub-id-type="doi">10.12737/szf-101202409</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">Effective subtraction technique: implementation for Irkutsk Incoherent Scatter Radar</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Метод эффективных вычитаний: работа с данными Иркутского радара некогерентного рассеяния</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ташлыков</surname>
       <given-names>Виктор Петрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Tashlykov</surname>
       <given-names>Viktor Petrovich</given-names>
      </name>
     </name-alternatives>
     <email>vtashlykov@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">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Алсаткин</surname>
       <given-names>Сергей Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Alsatkin</surname>
       <given-names>Sergei Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>alss@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 contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0660-8474</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Медведев</surname>
       <given-names>Андрей Всеволодович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Medvedev</surname>
       <given-names>Andrey Vsevolodovich</given-names>
      </name>
     </name-alternatives>
     <email>medvedev@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>доктор физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0847-3553</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ратовский</surname>
       <given-names>Константин Геннадьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ratovsky</surname>
       <given-names>Konstantin Gennadyevich</given-names>
      </name>
     </name-alternatives>
     <email>ratovsky@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-4"/>
    </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>
   <aff-alternatives id="aff-3">
    <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-4">
    <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="2024-03-26T18:02:29+03:00">
    <day>26</day>
    <month>03</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-03-26T18:02:29+03:00">
    <day>26</day>
    <month>03</month>
    <year>2024</year>
   </pub-date>
   <volume>10</volume>
   <issue>1</issue>
   <fpage>68</fpage>
   <lpage>73</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-11-12T00:00:00+03:00">
     <day>12</day>
     <month>11</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2023-12-18T00:00:00+03:00">
     <day>18</day>
     <month>12</month>
     <year>2023</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/55048/view">https://naukaru.ru/en/nauka/article/55048/view</self-uri>
   <abstract xml:lang="ru">
    <p>Метод эффективных вычитаний заключается в последовательном чередовании длительностей излученных импульсов во время измерений методом некогерентного рассеяния. Получаемый таким путем выигрыш в пространственном разрешении позволяет осуществить надежную оценку профиля электронной концентрации методом фарадеевских замираний. Рассмотрен метод измерения электронной концентрации в результате обработки узкополосных сигналов Иркутского радара некогерентного рассеяния, а также предложен автоматизированный метод определения электронной концентрации для задачи, в которой нельзя пренебречь сверткой мощности рассеянного сигнала с формой зондирующего импульса. Обратная задача восстановления электронной концентрации рассматривается как задача нелинейной оптимизации, и для ее решения используется метод последовательного применения алгоритмов глобальной и локальной оптимизации. Представлено сравнение значений электронной концентрации, полученных в результате анализа сигналов различных длительностей импульса, и данных Иркутского ионозонда.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>For incoherent scatter measurements, the effective subtraction technique is to alternate the duration of amplitude-modulated signals between a pair of consequently radiated pulses. The resulting gain of spatial resolution enables us to steadily assess the electron density profile by the Faraday rotation method. The paper describes the electron density measurement technique, which involves analyzing narrow-band signals from Irkutsk Incoherent Scatter Radar, and proposes an automated method of determining the electron density for the problem in which the convolution of the radiated signal waveform with backscatter signal cannot be neglected. The inverse problem of electron density recovery is considered as a standard nonlinear optimization problem, which is solved using the algorithms for global and local optimization applied consequently. We compare the electron density profiles obtained by analyzing different pulse waveforms and from Irkutsk ionosonde data.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>Иркутский радар некогерентного рассеяния</kwd>
    <kwd>метод эффективных вычитаний</kwd>
    <kwd>электронная концентрация</kwd>
    <kwd>эффект Фарадея</kwd>
    <kwd>алгоритмы оптимизации</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>Irkutsk Incoherent Scatter Radar</kwd>
    <kwd>effective subtraction technique</kwd>
    <kwd>plasma density recovery</kwd>
    <kwd>Faraday effect</kwd>
    <kwd>optimization algorithms</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-17-00146 [https://rscf.ru/ project/22-17-00146/] в части разработки метода обработки данных и анализа полученных результатов. Работа выполнена при финансовой поддержке Минобрнауки России в части проведения наблюдений</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Russian Science Foundation (Grant No. 22-17-00146 [https://rscf.ru/project/22-17-00146/]) in terms of developing the data processing method and analyzing the results and by the Ministry of Science and Higher Education of the Russian Federation in terms of observations</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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