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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">metrol</journal-id><journal-title-group><journal-title xml:lang="ru">Метрология</journal-title><trans-title-group xml:lang="en"><trans-title>Metrologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0132-4713</issn><issn pub-type="epub">2712-9071</issn><publisher><publisher-name>ВНИИМС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0132-4713.2021-4-53-67</article-id><article-id custom-type="elpub" pub-id-type="custom">metrol-80</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>РАДИОТЕХНИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group></article-categories><title-group><article-title>Определение вероятностных характеристик случайных значений оценок функции Ляпунова при описании физического процесса</article-title><trans-title-group xml:lang="en"><trans-title>Determination of probabilistic characteristics of random values of estimates of the Lyapunov function when describing a physical process</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>Вешкурцев</surname><given-names>Ю. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Veshkurtsev</surname><given-names>Yu. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Михайлович Вешкурцев</p><p>Омск</p></bio><bio xml:lang="en"><p>Yuri M. Veshkurtsev</p><p>Omsk</p></bio><email xlink:type="simple">vym1940@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3135-398X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Titov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Анатольевич Титов</p><p>Омск</p></bio><bio xml:lang="en"><p>Dmitry A. Titov</p><p>Omsk</p></bio><email xlink:type="simple">dtitov2@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт радиоэлектроники, сервиса и диагностики</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Radioelectronics, service and diagnostics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Омский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Omsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>15</day><month>12</month><year>2021</year></pub-date><volume>0</volume><issue>4</issue><fpage>53</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ВНИИМС, 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">ВНИИМС</copyright-holder><copyright-holder xml:lang="en">ВНИИМС</copyright-holder><license xlink:href="https://metrol.elpub.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://metrol.elpub.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://metrol.elpub.ru/jour/article/view/80">https://metrol.elpub.ru/jour/article/view/80</self-uri><abstract><p>Прикладное применение характеристической функции Ляпунова определяется свойствами её оценок. Впервые описаны вероятностные характеристики оценок характеристической функции Ляпунова. Эмпирически с использованием статистических методов оценены вероятностные характеристики случайных значений оценок функции Ляпунова. В пакете Matlab разработана модель специального устройства для получения оценок характеристической функции прямым методом. На вход модели подан квазидетерминированный сигнал, мгновенные значения которого распределены по закону арксинуса, а на выходе получен массив значений оценок функции Ляпунова, который использован для оценивания вероятностных характеристик этих оценок. Статистическое оценивание выполнено косвенным методом. Установлено, что значения оценок характеристической функции Ляпунова распределены по нормальному закону. Результаты исследований будут полезны при инженерных расчётах, например, при выявлении ошибок передачи сообщений в модемах с модулированной характеристической функцией.</p></abstract><trans-abstract xml:lang="en"><p>The applied application of the Lyapunov characteristic function is determined by the properties of its estimates. Probabilistic characteristics of estimates of the Lyapunov characteristic function are described for the first time. The probabilistic characteristics of random values of estimates of the Lyapunov function are empirically estimated using statistical methods. The Matlab package has developed a model of a special device for obtaining estimates of the characteristic function by a direct method. A quasi-deterministic signal is fed to the input of the model, the instantaneous values of which are distributed according to the arcsine law, and an array of values of estimates of the Lyapunov function is obtained at the output, which is used to estimate the probabilistic characteristics of these estimates. Statistical estimation was performed by an indirect method. It is established that the values of the estimates of the Lyapunov characteristic function are distributed according to the normal law. The results of the research will be useful in engineering calculations, for example, when detecting message transmission errors in modems with a modulated characteristic function.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оценки вероятностных характеристик</kwd><kwd>случайный процесс</kwd><kwd>характеристическая функция Ляпунова</kwd><kwd>устройство измерения оценок</kwd></kwd-group><kwd-group xml:lang="en"><kwd>estimates of probabilistic characteristics</kwd><kwd>random process</kwd><kwd>Lyapunov characteristic function</kwd><kwd>estimation measurement device</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">Ляпунов А. М. Собрание сочинений в 6 томах. Т. 1. 448 с. М.: АН СССР, 1954. С. 125–176.</mixed-citation><mixed-citation xml:lang="en">Lyapunov A. 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