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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">tuzsut</journal-id><journal-title-group><journal-title xml:lang="ru">Труды учебных заведений связи</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Telecommunication Universities</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-324X</issn><issn pub-type="epub">2712-8830</issn><publisher><publisher-name>СПбГУТ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">tuzsut-245</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Особенности применения нелокальных граничных условий в задаче тропосферного распространения радиоволн</article-title><trans-title-group xml:lang="en"><trans-title>On application of non-local boundary conditions for tropospheric radio wave propagation problems</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>Вавилов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vavilov</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вавилов Сергей Анатольевич, доктор физико-математических наук, профессор, профессор кафедры экономической кибернетики Санкт-Петербургского государственного университета</p><p>Санкт-Петербург, 191123, Российская Федерация</p></bio><email xlink:type="simple">savavilov@inbox.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>Лытаев</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Lytaev</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лытаев Михаил Сергеевич, аспирант кафедры сетей связи и передачи данных Санкт-Петербургского государственного университета телекоммуникаций им. проф. М.А. Бонч-Бруевича</p><p>Санкт-Петербург, 193232, Российская Федерация</p></bio><email xlink:type="simple">mikelytaev@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Санкт-Петербургский государственный университет<country>Россия</country></aff><aff xml:lang="en">St.Petersburg State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича<country>Россия</country></aff><aff xml:lang="en">The Bonch-Bruevich Saint-Petersburg State University of Telecommunication<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>27</day><month>01</month><year>2022</year></pub-date><volume>3</volume><issue>1</issue><fpage>13</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вавилов С.А., Лытаев М.С., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Вавилов С.А., Лытаев М.С.</copyright-holder><copyright-holder xml:lang="en">Vavilov S., Lytaev M.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://tuzs.sut.ru/jour/article/view/245">https://tuzs.sut.ru/jour/article/view/245</self-uri><abstract><p>В работе исследуется метод дискретных нелокальных граничных условий для решения задачи численного моделирования распространения ультракоротких радиоволн вблизи поверхности Земли в параксиальном приближении. Представлена модификация указанного подхода для широкоугольного параболического уравнения. Предложенный метод позволяет обходиться без искусственного вводимого понятия поглощающего слоя при пошаговом построении численного решения в полубесконечной области. Выполнено сравнение с методом расщепления Фурье.</p></abstract><trans-abstract xml:lang="en"><p>In this research we are concerned with the method of non-local transparent boundary conditions for the numerical modeling of radio wave propagation near the Earth's surface. A modification of this approach to wide-angle parabolic equation is presented. The considered method does not require manual selection of the artificial parameters depending on the initial data. A comparison analysis with split-step Fourier method is given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Распространение радиоволн</kwd><kwd>неоднородная тропосфера</kwd><kwd>параболическое уравнение</kwd><kwd>уравнение Гельмгольца</kwd><kwd>нелокальное граничное условие</kwd></kwd-group><kwd-group xml:lang="en"><kwd>radiowave propagation</kwd><kwd>inhomogeneous medium</kwd><kwd>parabolic equation</kwd><kwd>Helmholtz equation</kwd><kwd>non-local boundary conditions</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">Zhang P., Bai L., Wu Z., Guo L. Applying the Parabolic Equation to Tropospheric Groundwave Propagation: A review of recent achievements and significant milestones // IEEE Antennas and Propagation Magazine. 2016. Vol. 58. Iss. 3. PP. 31–44.</mixed-citation><mixed-citation xml:lang="en">Zhang P., Bai L., Wu Z., Guo L. 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