The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account
In the analytical approximation of time dependent average power of a satellite altimeter echo-signal (power profile) the Doppler scattering of individual specular point responses is usually neglected. Meanwhile, in the modern Ka-band altimeters the Doppler shift of reflection from a point near illum...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
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Saint Petersburg Electrotechnical University "LETI"
2017-06-01
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| Series: | Известия высших учебных заведений России: Радиоэлектроника |
| Subjects: | |
| Online Access: | https://re.eltech.ru/jour/article/view/174 |
| _version_ | 1797874539587174400 |
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| author | D. S. Borovitsky A. E. Zhesterev V. P. Ipatov R. M. Mamchur |
| author_facet | D. S. Borovitsky A. E. Zhesterev V. P. Ipatov R. M. Mamchur |
| author_sort | D. S. Borovitsky |
| collection | DOAJ |
| description | In the analytical approximation of time dependent average power of a satellite altimeter echo-signal (power profile) the Doppler scattering of individual specular point responses is usually neglected. Meanwhile, in the modern Ka-band altimeters the Doppler shift of reflection from a point near illuminated spot edge is greater than the frequency resolution. The equation for the power profile allowing for the Doppler effect is derived. While, as expected, the profile leading edge is not influenced by the Doppler shift, there is critical discrepancy in the trailing edge behavior between ranging LFM and BPSK signals. If for the former the Doppler shift involvement does not change trailing edge steepness for the latter it makes the profile decrease much faster. Finally, the possibility to utilize the Doppler scattering to improve along-track altimeter resolution is discussed. |
| first_indexed | 2024-04-10T01:33:46Z |
| format | Article |
| id | doaj.art-69a3b7d80ef349ac9821bde148b75a5a |
| institution | Directory Open Access Journal |
| issn | 1993-8985 2658-4794 |
| language | Russian |
| last_indexed | 2024-04-10T01:33:46Z |
| publishDate | 2017-06-01 |
| publisher | Saint Petersburg Electrotechnical University "LETI" |
| record_format | Article |
| series | Известия высших учебных заведений России: Радиоэлектроника |
| spelling | doaj.art-69a3b7d80ef349ac9821bde148b75a5a2023-03-13T09:20:22ZrusSaint Petersburg Electrotechnical University "LETI"Известия высших учебных заведений России: Радиоэлектроника1993-89852658-47942017-06-01034651174The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into AccountD. S. Borovitsky0A. E. Zhesterev1V. P. Ipatov2R. M. Mamchur3АО "Российский институт радионавигации и времени" (Санкт-Петербург)АО "Российский институт радионавигации и времени" (Санкт-Петербург)Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)In the analytical approximation of time dependent average power of a satellite altimeter echo-signal (power profile) the Doppler scattering of individual specular point responses is usually neglected. Meanwhile, in the modern Ka-band altimeters the Doppler shift of reflection from a point near illuminated spot edge is greater than the frequency resolution. The equation for the power profile allowing for the Doppler effect is derived. While, as expected, the profile leading edge is not influenced by the Doppler shift, there is critical discrepancy in the trailing edge behavior between ranging LFM and BPSK signals. If for the former the Doppler shift involvement does not change trailing edge steepness for the latter it makes the profile decrease much faster. Finally, the possibility to utilize the Doppler scattering to improve along-track altimeter resolution is discussed.https://re.eltech.ru/jour/article/view/174спутниковый высотомерэхосигналдоплеровское рассеяниелчм-сигналфм-сигналсинтезированная антенна |
| spellingShingle | D. S. Borovitsky A. E. Zhesterev V. P. Ipatov R. M. Mamchur The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account Известия высших учебных заведений России: Радиоэлектроника спутниковый высотомер эхосигнал доплеровское рассеяние лчм-сигнал фм-сигнал синтезированная антенна |
| title | The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account |
| title_full | The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account |
| title_fullStr | The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account |
| title_full_unstemmed | The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account |
| title_short | The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account |
| title_sort | space based altimeter echo signal when doppler scattering is taken into account |
| topic | спутниковый высотомер эхосигнал доплеровское рассеяние лчм-сигнал фм-сигнал синтезированная антенна |
| url | https://re.eltech.ru/jour/article/view/174 |
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