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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">10.17586/0021-3454-2024-67-8-637-646</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-42</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>ИНФОРМАТИКА И ИНФОРМАЦИОННЫЕ ПРОЦЕССЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFORMATICS AND INFORMATION PROCESSES</subject></subj-group></article-categories><title-group><article-title>Множества пятеричных касами-подобных последовательностей для систем передачи цифровой информации</article-title><trans-title-group xml:lang="en"><trans-title>Sets of Quinary Kasami-like Sequences for Digital Information Transmission Systems</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>Стародубцев</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Starodubtsev</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Геннадьевич Стародубцев – канд. техн. наук, доцент; кафедра технологий и средств автоматизации обработки и анализа информации космических средств; преподаватель</p><p>197198, Санкт-Петербург</p><p> </p></bio><bio xml:lang="en"><p>Victor G. Starodubtsev – PhD, Associate Professor; Department of Technologies and Automation Tools for Processing and Analysis of Spacecraft Information; Lecturer</p><p>St. Petersburg</p></bio><email xlink:type="simple">vgstarod@mail.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>Морозов</surname><given-names>Я. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozov</surname><given-names>Y. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ян Геннадьевич Морозов – кафедра технологий и средств автоматизации обработки и анализа информации космических средств; слушатель</p><p>197198, Санкт-Петербург</p></bio><bio xml:lang="en"><p>Yan G. Morozov – Department of Technologies andAutomation Tools for Processing and Analysis of Spacecraft Information; Student</p><p>St. Petersburg</p></bio><email xlink:type="simple">vka@mil.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Военно-космическая академия имени А. Ф. Можайского</institution></aff><aff xml:lang="en"><institution>A. F. Mozhaisky Military Space Academy</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>25</day><month>11</month><year>2024</year></pub-date><volume>67</volume><issue>8</issue><fpage>637</fpage><lpage>646</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/42">https://pribor.ifmo.ru/jour/article/view/42</self-uri><abstract><p>Для пятеричных базисных М-последовательностей с периодом N = 5S – 1 (S = 4, 6) представлены наборы векторов индексов децимации I S,МК = (d1, d2, …, dn), на основании которых в конечных полях GF(5S) формируются малые множества касами-подобных последовательностей (КПП) с периодом N &lt; 20 000. Показано, что для значений S = 4, 6 периодическая взаимно корреляционная функция (ПВКФ) малого множества КПП является четырехуровневой с максимальным значением модуля ПВКФ |Rmax | S,МК = (5S/2 + 1). Приведены значения объемов малых множеств пятеричных КПП.</p></abstract><trans-abstract xml:lang="en"><p>For quinary basic M-sequences (MS) with the period N = 5S – 1 (S = 4, 6), sets of vectors of decimation indices IS,MK = (d1, d2, ..., dn ) are presented, on the basis of which small sets of Kasami-like sequences (KLS) with the period N &lt; 20 000 are formed in the finite fields GF(5S). It is shown that for values of S = 4, 6 the periodic cross-correlation function (PCCF) of a small set of KLS is four-level with a maximum value of the PCCF |Rmax | S,MK = (5S/2 + 1). The values of the volumes of small sets of quinary KLS are given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>конечное поле</kwd><kwd>корреляционная функция</kwd><kwd>М-последовательность</kwd><kwd>последовательность Касами</kwd><kwd>индекс децимации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite fields</kwd><kwd>correlation function</kwd><kwd>M-sequences</kwd><kwd>Kasami sequences</kwd><kwd>decimation indices</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">Ипатов В. П. Широкополосные системы и кодовое разделение сигналов. Принципы и приложения. М.: Техносфера, 2007. 488 с.</mixed-citation><mixed-citation xml:lang="en">Ipatov V.P. Spread Spectrum and CDMA. 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