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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">radioelectronics</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений России. Радиоэлектроника</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of the Russian Universities. Radioelectronics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1993-8985</issn><issn pub-type="epub">2658-4794</issn><publisher><publisher-name>Saint Petersburg Electrotechnical University</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-159</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 СРЕДСТВА ПЕРЕДАЧИ, ПРИЕМА И ОБРАБОТКИ СИГНАЛОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIO ELECTRONIC FACILITIES FOR SIGNAL TRANSMISSION, RECEPTION AND PROCESSING</subject></subj-group></article-categories><title-group><article-title>Потенциальная точность измерения запаздывания отраженного сигнала космическим альтиметром</article-title><trans-title-group xml:lang="en"><trans-title>Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter</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>Боровицкий</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Borovitsky</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук (2016), ведущий научный сотрудник</p></bio><bio xml:lang="en"><p>Ph.D. in Engineering (2016), leading research fellow</p></bio><email xlink:type="simple">dmitry_nepogodin@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>Жестерев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhesterev</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук (1982), начальник отдела</p></bio><bio xml:lang="en"><p>Ph.D. in Engineering (1982), chief of the department</p></bio><email xlink:type="simple">zhesterev@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>Ипатов</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ipatov</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук (1983), профессор (1985) кафедры радиотехнических систем</p></bio><bio xml:lang="en"><p>D.Sc. in Engineering (1983), Professor (1985) of the Department of Radio Engineering Systems</p></bio><email xlink:type="simple">ival1941@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мамчур</surname><given-names>Р. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamchur</surname><given-names>R. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистр техники и технологий по направлению "Радиотехника" (2015), аспирант и ассистент кафедры радиотехнических систем</p></bio><bio xml:lang="en"><p>Master of Science in Radio Engineering (2015), postgraduate student and assistant of the Department of Radio Engineering Systems</p></bio><email xlink:type="simple">ruslan.mamchur@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АО "Российский институт радионавигации и времени"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>JSC "Russian Institute of Radionavigation and Time"</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University "LETI"</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>04</month><year>2017</year></pub-date><volume>0</volume><issue>2</issue><fpage>5</fpage><lpage>11</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Боровицкий Д.С., Жестерев А.Е., Ипатов В.П., Мамчур Р.М., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Боровицкий Д.С., Жестерев А.Е., Ипатов В.П., Мамчур Р.М.</copyright-holder><copyright-holder xml:lang="en">Borovitsky D.S., Zhesterev A.E., Ipatov V.P., Mamchur R.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://re.eltech.ru/jour/article/view/159">https://re.eltech.ru/jour/article/view/159</self-uri><abstract><p>Синтезирован максимально правдоподобный измеритель запаздывания отраженного сигнала спутникового высотомера. На основе границы Крамера-Рао получено выражение для минимально достижимой дисперсии оценки запаздывания.</p></abstract><trans-abstract xml:lang="en"><p>Satellite radar altimetry is a universal tool for global all-weather monitoring of the surface of the Earth. Substantial contribution to the satellite altimeter error is made by a component associated with noise and random nature of the echo-signal itself. When simulating a scattering surface with an array of specular points the altimeter echo-signal represents Gaussian process waveform received against AWGN. In such a case, the conventional statistical design produces an optimal echo-signal delay estimator in the form of the bank of identical energy receivers where decision is made according to maximal response. The Cramer-Rao bound defines the dependence of potential delay estimate accuracy on power and spectral resources used by altimeter, and the form of received power profile. The validity of analytical results obtained is confirmed by MATLAB simulation. It is also shown that the routine method of delay estimate based on threshold crossing yields manifold to the optimal one in measuring accuracy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Спутниковый высотомер</kwd><kwd>измерение запаздывания</kwd><kwd>оценка по максимуму правдоподобия</kwd><kwd>граница Крамера-Рао</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Satellite Altimeter</kwd><kwd>Delay Estimate</kwd><kwd>Maximum Likelihood Estimate</kwd><kwd>Cramer-Rao Bound</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">Комплексный спутниковый мониторинг морей России / О. Ю. Лаврова, А. Г. Костяной, С. А. Лебедев и др. М.: ИКИ РАН, 2011. 480 с.</mixed-citation><mixed-citation xml:lang="en">Lavrova O. Yu., Kostianoy A. G., Lebedev S. A., Mitjagina M. I., Ginzburg A. I., Sheremet N. A. 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