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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 pub-id-type="doi">10.32603/1993-8985-2019-22-2-13-21</article-id><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-308</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>ФИЛЬТРАЦИЯ И СГЛАЖИВАНИЕ ДАННЫХ СПУТНИКОВОГО ВЫСОТОМЕРА ПРИ НАЗЕМНОЙ ДООБРАБОТКЕ</article-title><trans-title-group xml:lang="en"><trans-title>SATELLITE ALTIMETER DATA FILTERING AND SMOOTHING IN THE COURSE OF GROUND-BASED RETRACKING</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>Cand. of Sci. (Engineering) (2016), leading researcher</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>Cand. of Sci. (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>Dr. of Sci. (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>2019</year></pub-date><pub-date pub-type="epub"><day>24</day><month>04</month><year>2019</year></pub-date><volume>22</volume><issue>2</issue><fpage>13</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Боровицкий Д.С., Жестерев А.Е., Ипатов В.П., Мамчур Р.М., 2019</copyright-statement><copyright-year>2019</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/308">https://re.eltech.ru/jour/article/view/308</self-uri><abstract><sec><title>Введение</title><p>Введение. Спутниковый радиовысотомер является основным элементом космических аппаратов, функционирующих в составе комплексов дистанционного мониторинга поверхности Земли. Бортовая петля слежения за запаздыванием в спутниковом высотомере, согласно утвердившимся воззрениям, функционально служит лишь инструментом надежного удержания принимаемого эхосигнала в следящем окне, тогда как "чистовое" измерение альтиметрических параметров (высоты орбиты носителя, значимой высоты волны, отражающей способности зондируемой поверхности и др.) возлагается на наземную дообработку данных. В ходе указанной процедуры данные с высотомера подвергаются, в частности, фильтрации и сглаживанию.</p></sec><sec><title>Цель работы</title><p>Цель работы. Исследование алгоритмов дообработки данных, транслируемых с высотомера, в наземном измерительном сегменте.</p></sec><sec><title>Методы и материалы</title><p>Методы и материалы. Известно, что фильтрация данных выполняется уже на борту космического аппарата и реализована в контуре автосопровождения эхосигнала по времени на базе α–β-фильтра. Тем не менее, на этапе наземной дообработки более целесообразным представляется применение фильтра Калмана, обладающего рядом теоретически оптимальных свойств и эффективно использующего доступный вычислительный ресурс.</p></sec><sec><title>Результаты и заключение</title><p>Результаты и заключение. В статье описана реализация упомянутых операций фильтрации и сглаживания на базе алгоритма Калмана применительно к выработанным ранее оценкам запаздывания эхосигнала. По результатам проведенного компьютерного моделирования констатируется, что калмановские фильтрация и сглаживание повышают точность оценки запаздывания в режиме дообработки в два раза и более в зависимости от значимой высоты волны.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Satellite radar altimeter is an essential part of the Earth remote sensing space missions. Satellite altimeter on-board delay-lock loop, by a widely shared concept, is operationally just a tool of a reliable retaining of received echo-signal within the tracking window, while “fine” altimetric parameter (orbit height, significant wave height, scattering cross section per unit of a probed surface, etc.) measuring is committed to the ground-based retracking of data. In particular, in the course of retracking altimeter data are being filtered and/or smoothed.</p></sec><sec><title>Objective</title><p>Objective. The paper subject is study of retracking algorithms of altimeter data transmitted from the space vehicle to the ground segment.</p></sec><sec><title>Methods and materials</title><p>Methods and materials. It is known that data filtering already presents on-board the space vehicle and is implemented in delay-lock loop based on the α–β-filter. However, at the stage of ground-based retracking it seems more appropriate to use the Kalman filter, which possesses a number of theoretical optimal features and is efficient as for utilization of the available computational resource.</p></sec><sec><title>Results and conclusions</title><p>Results and conclusions. In the paper implementation of filtering and smoothing via Kalman algorithm is described. On the ground of computer simulation data it is stated that Kalman filtering and smoothing make estimate accuracy two and more times higher depending on significant wave height.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>спутниковый высотомер</kwd><kwd>дообработка</kwd><kwd>фильтр Калмана</kwd><kwd>сглаживание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>satellite altimeter</kwd><kwd>retracking</kwd><kwd>Kalman filter</kwd><kwd>smoothing</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">Coastal Altimetry / ed. by S. Vignudelli, A. G. Kostianoy, P. Cipollini, J. Benveniste. Berlin: Springer, 2011. 565 p.</mixed-citation><mixed-citation xml:lang="en">Coastal Altimetry; ed. by S. Vignudelli, A. G. Kostianoy, P. Cipollini, J. Benveniste. Berlin: Springer, 2011, 565 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Satellite Altimetry / D. B. Chelton, J. C. Ries, B. J. Haines et al. // Satellite Altimetry and Earth Sciences: a Handbook of Techniques and Applications; ed. by L.-L. Fu, A. Cazenave. San Diego: Academic Press, 2001. P. 1–132.</mixed-citation><mixed-citation xml:lang="en">Chelton D. B., Ries J. C., Haines B. J. et al. Satellite Altimetry. Satellite Altimetry and Earth Sciences: a Handbook of Techniques and Applications; ed. by L.-L. Fu and A. Cazenave. San Diego: Academic Press, 2001, pp. 1–132.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Исследование характеристик робастных дискриминаторов запаздывания спутникового высотомера / Д. С. Боровицкий, А. Е. Жестерев, В. П. Ипатов, Р. М. Мамчур // Изв. вузов России. Радиоэлектроника. 2018. № 4. С. 13–23. doi: 10.32603/1993-8985-2018-21-4-13-23</mixed-citation><mixed-citation xml:lang="en">Borovitsky D. S., Zhesterev A. E., Ipatov V. P., Mamchur R. M. Study of Robust TOA Discriminators for Space-Based Radar Altimeter. Journal of the Russian Universities. Radioelectronics. 2018, no. 4, pp. 13–23. doi: 10.32603/1993-8985-2018-21-4-13-23 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Оценка параметров эхосигнала спутникового высотомера методами статистической подгонки на стадии дообработки / Д. С. Боровицкий, А. Е. Жестерев, В. П. Ипатов, Р. М. Мамчур // Изв. вузов России. Радиоэлектроника. 2019. № 1. С. 5–16. doi: 10.32603 /1993-8985-2019-22-1-5-16.</mixed-citation><mixed-citation xml:lang="en">Borovitsky D. S., Zhesterev A. E., Ipatov V. P., Mamchur R. M. Estimation of Satellite Altimeter EchoSignal Parameters by Statistical Fitting Methods in the Course of Retracking. Journal of the Russian Universities. Radioelectronics. 2019, vol. 22, no. 1, pp. 5–16. doi: 10.32603/1993-8985-2019-22-1-5-16 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Improving the Jason-1 ground retracking to better account for attitude effects / L. Amarouche, P. Thibaut, O. Z. Zanife, J.-P. Dumont, P. Vincent, N. Steunou // Marine Geodesy. 2004. Vol. 27, № 1–2. P. 171–197. doi: 10.1080/01490410490465210</mixed-citation><mixed-citation xml:lang="en">Amarouche L., Thibaut P., Zanife O. Z., Dumont J.-P., Vincent P., Steunou N. Improving the Jason-1 Ground Retracking to Better Account for Attitude Effects. Marine Geodesy. 2004, vol. 27, no. 1–2, pp. 171–197. doi: 10.1080/01490410490465210</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Comparison of the Ku-Band range noise level and the relative sea-state bias of the Jason-1, TOPEX, and Poseidon-1 radar altimeters / O. Z. Zanife, P. Vincent, L. Amarouche, J.-P. Dumont, P. Thibaut, S. Labroue // Marine Geodesy. 2003. Vol. 26, no. 3–4. P. 201–238. (Spec. Iss.: Jason-1 Calibration/Validation). doi: 10.1080 /714044519</mixed-citation><mixed-citation xml:lang="en">Zanife O. Z., Vincent P., Amarouche L., Dumont J.-P., Thibaut P., Labroue S. Comparison of the Ku-Band Range Noise Level and the Relative Sea-State Bias of the Jason-1, TOPEX, and Poseidon-1 Radar Altimeters. Marine Geodesy. 2003, vol. 26, no. 3–4, pp. 201–238. (Special Issue: Jason-1 Calibration/Validation). doi: 10.1080 /714044519</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">AltiKa altimeter: instrument description and in flight performance / N. Steunou, J. D. Desjonquères, N. Picot, P. Sengenes, J. Noubel, J. C. Poisson // Marine Geodesy. 2015. Vol. 38, № 1. P. 22–42. doi: 10.1080/01490419.2015.1006381</mixed-citation><mixed-citation xml:lang="en">Steunou N., Desjonquères J. D., Picot N., Sengenes P., Noubel J., Poisson J. C. AltiKa Altimeter: Instrument Description and in Flight Performance. Marine Geodesy. 2015, vol. 38, no. 1, pp. 22–42. doi: 10.1080/01490419.2015.1006381</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Satellite altimetry in geodesy and oceanography / ed. by R. Rummel and F. Sanso. Berlin: Springer, 1993. 479 p.</mixed-citation><mixed-citation xml:lang="en">Satellite Altimetry in Geodesy and Oceanography; ed. by R. Rummel and F. Sanso. Berlin, Springer, 1993, 479 p.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Сейдж Э., Мелс Дж. Теория оценивания и ее применение в связи и управлении / пер. с англ. М.: Связь, 1976. 496 с.</mixed-citation><mixed-citation xml:lang="en">Sage A. P., Melsa J. L. Estimation Theory with Application to Communication and Control. New York, McGraw-Hill, 1971, 529 p.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Brown R. G., Hwang P. Introduction to random signals and applied Кalman filtering. 4th ed. New York: John Wiley &amp; Sons, 2012. 397 p.</mixed-citation><mixed-citation xml:lang="en">Brown R. G., Hwang P. Introduction to Random Signals and Applied Kalman Filtering. 4th ed. New York, John Wiley &amp; Sons, 2012, 397 p.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Grewal M. S., Andrews A. Kalman filtering: theory and practice using MATLAB. 2th ed. New York: John Wiley &amp; Sons, 2001. 401 p.</mixed-citation><mixed-citation xml:lang="en">Grewal M. S., Andrews A. Kalman Filtering: Theory and Practice Using MATLAB. 2th ed. New York, John Wiley &amp; Sons, 2001, 401 p.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Poseidon-3 radar altimeter: new modes and in-flight performances / J. D. Desjonquères, G. Carayon, N. Steunou, J. Lambin // Marine Geodesy. 2010. Vol. 33. P. 53–79. doi: 10.1080/01490419.2010.488970</mixed-citation><mixed-citation xml:lang="en">Desjonquères J. D., Carayon G., Steunou N., Lambin J. Poseidon-3 Radar Altimeter: New Modes and in-Flight Performances. Marine Geodesy. 2010, vol. 33, pp. 53–79. doi: 10.1080/01490419.2010.488970</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Rodriguez E., Martin J. M. Correlation properties of ocean altimeter returns // IEEE Trans. on Geoscience and Remote Sensing. 1994. Vol. GRS-32, № 3. P. 553–561. doi: 10.1109/36.297974</mixed-citation><mixed-citation xml:lang="en">Rodriguez E., Martin J. M. Correlation Properties of Ocean Altimeter Returns. IEEE Trans. on Geoscience and Remote Sensing. 1994, vol. GRS-32, no. 3, pp. 553– 561. doi: 10.1109/36.297974</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Webb D. J., Moore A. Assimilation of altimeter data into ocean models // J. of Physical Oceanography. 1986. Vol. 16. P. 1901–1913. doi: 10.1175/1520-0485(1986) 0162.0.CO;2.</mixed-citation><mixed-citation xml:lang="en">Webb D. J., Moore A. Assimilation of Altimeter Data into Ocean Models. J. of Physical Oceanography. 1986, vol. 16, pp. 1901–1913. doi: 10.1175/1520-0485(1986) 0162.0.CO;2</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Marshall J. C. Determining the ocean circulation and improving the geoid from satellite altimetry // J. of Physical Oceanography. 1985. Vol. 15. P. 330–349. doi: 10.1175/1520-0485(1985)0152.0.CO;2.</mixed-citation><mixed-citation xml:lang="en">Marshall J. C. Determining the Ocean Circulation and Improving the Geoid from Satellite Altimetry. J. of Physical Oceanography, 1985, vol. 15, pp. 330–349. doi: 10.1175/1520-0485(1985)0152.0.CO;2</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Mellor G. L., Ezer T. A Gulf stream model and an altimetry assimilation scheme // J. of Geophysical Research. 1991. Vol. 96. P. 8779–8795. doi: 10.1029/91JC00383.</mixed-citation><mixed-citation xml:lang="en">Mellor G. L., Ezer T. A Gulf Stream Model and an Altimetry Assimilation Scheme. J. of Geophysical Research. 1991, vol. 96, pp. 8779–8795. doi: 10.1029/91JC00383</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Медич Дж. Статистически оптимальные линейные оценки и управление / пер. с англ. М.: Энергия, 1973. 440 с</mixed-citation><mixed-citation xml:lang="en">Meditch J. S. Stochastic Optimal Linear Estimation and Control. New York, McGraw-Hill, 1969, 394 p.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
