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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</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">122596</article-id>
   <article-id pub-id-type="doi">10.12737/szf-122202614</article-id>
   <article-id pub-id-type="edn">sanbmj</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">Modern digital backend systems for the radio telescopes of the Quasar VLBI network</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Современные цифровые системы преобразования сигналов радиотелескопов комплекса «Квазар-КВО»</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/0000-0002-9870-3489</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Маршалов</surname>
       <given-names>Дмитрий Александрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Marshalov</surname>
       <given-names>Dmitriy Aleksandrovich</given-names>
      </name>
     </name-alternatives>
     <email>marshalov@iaaras.ru</email>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1577-9638</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гренков</surname>
       <given-names>Сергей Александрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Grenkov</surname>
       <given-names>Sergey Aleksandrovich</given-names>
      </name>
     </name-alternatives>
     <email>grenkov@iaaras.ru</email>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Бердников</surname>
       <given-names>Антон Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Berdnikov</surname>
       <given-names>Anton Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>as.berdnikov@iaaras.ru</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9872-4215</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Федотов</surname>
       <given-names>Леонид Васильевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Fedotov</surname>
       <given-names>Leonid Vasilevich</given-names>
      </name>
     </name-alternatives>
     <email>fedotov@iaaras.ru</email>
     <bio xml:lang="ru">
      <p>доктор технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт прикладной астрономии РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Applied Astronomy RAS</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт прикладной астрономии РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Applied Astronomy RAS</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Институт прикладной астрономии РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Applied Astronomy RAS</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Институт прикладной астрономии РАН</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Applied Astronomy RAS</institution>
     <city>Saint Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <volume>12</volume>
   <issue>2</issue>
   <fpage>130</fpage>
   <lpage>136</lpage>
   <history>
    <date date-type="received" iso-8601-date="2025-11-07T00:00:00+03:00">
     <day>07</day>
     <month>11</month>
     <year>2025</year>
    </date>
    <date date-type="accepted" iso-8601-date="2026-02-16T00:00:00+03:00">
     <day>16</day>
     <month>02</month>
     <year>2026</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/122596/view">https://naukaru.ru/en/nauka/article/122596/view</self-uri>
   <abstract xml:lang="ru">
    <p>В статье рассмотрены современные цифровые системы преобразования сигналов радиотелескопов комплекса «Квазар-КВО». Кратко прослежена эволюция аппаратуры преобразования сигналов от аналоговых и гибридных решений к многофункциональной цифровой системе преобразования сигналов (МСПС), обеспечивающей полную цифровую обработку принимаемых сигналов в широкой полосе частот. Описаны архитектура, основные технические характеристики и режимы работы МСПС, а также особенности ее применения на радиотелескопах РТ-13 и РТ-32. Показано, что использование МСПС позволяет унифицировать аппаратные средства радиотелескопов, поддерживать широкополосные и узкополосные режимы радиоинтерферометрии со сверхдлинными базами, а также реализовывать спектральные и радиометрические наблюдения в рамках единой аппаратно-программной платформы. Приведены примеры практического применения системы, подтверждающие ее эффективность, стабильность параметров сигнального тракта и совместимость с отечественными и международными стандартами регистрации и передачи данных. В заключение обсуждаются перспективы дальнейшего развития системы и расширения круга решаемых научных и прикладных задач.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>This paper presents modern digital signal conversion systems used for radio telescopes of the Quasar VLBI network. We briefly trace the evolution of signal conversion equipment from analog and hybrid solutions to a multifunctional digital backend system (MDBE) providing fully digital processing of received signals over a wide frequency range. The architecture, main technical characteristics, and operating modes of MDBE are described, along with specific features of its application on the RT-13 and RT-32 radio telescopes. It is shown that the use of MDBE enables unification of signal conversion hardware, supports both broadband and narrowband very long baseline interferometry modes, and allows spectral and radiometric observations to be implemented within a single hardware–software platform. We give examples of practical applications demonstrating the system’s efficiency, stability of signal path parameters, and compatibility with national and international data recording and transmission standards. Prospects for further development of the system and expansion of the range of scientific and applied problems are also discussed.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>радиотелескоп</kwd>
    <kwd>радиоастрономическая аппаратура</kwd>
    <kwd>система преобразования сигналов</kwd>
    <kwd>цифровая обработка сигналов</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>radio telescope</kwd>
    <kwd>radio astronomical equipment</kwd>
    <kwd>signal conversion system</kwd>
    <kwd>digital signal processing</kwd>
   </kwd-group>
  </article-meta>
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