Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter
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 a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
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Saint Petersburg Electrotechnical University "LETI"
2017-04-01
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| Series: | Известия высших учебных заведений России: Радиоэлектроника |
| Subjects: | |
| Online Access: | https://re.eltech.ru/jour/article/view/159 |
| _version_ | 1797874525540450304 |
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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 | 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. |
| first_indexed | 2024-04-10T01:33:30Z |
| format | Article |
| id | doaj.art-37da4c4da9f444438e6b312f8c560b96 |
| institution | Directory Open Access Journal |
| issn | 1993-8985 2658-4794 |
| language | Russian |
| last_indexed | 2024-04-10T01:33:30Z |
| publishDate | 2017-04-01 |
| publisher | Saint Petersburg Electrotechnical University "LETI" |
| record_format | Article |
| series | Известия высших учебных заведений России: Радиоэлектроника |
| spelling | doaj.art-37da4c4da9f444438e6b312f8c560b962023-03-13T09:20:22ZrusSaint Petersburg Electrotechnical University "LETI"Известия высших учебных заведений России: Радиоэлектроника1993-89852658-47942017-04-0102511159Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar AltimeterD. S. Borovitsky0A. E. Zhesterev1V. P. Ipatov2R. M. Mamchur3АО "Российский институт радионавигации и времени"АО "Российский институт радионавигации и времени"Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)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.https://re.eltech.ru/jour/article/view/159спутниковый высотомеризмерение запаздыванияоценка по максимуму правдоподобияграница крамера-рао |
| spellingShingle | D. S. Borovitsky A. E. Zhesterev V. P. Ipatov R. M. Mamchur Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter Известия высших учебных заведений России: Радиоэлектроника спутниковый высотомер измерение запаздывания оценка по максимуму правдоподобия граница крамера-рао |
| title | Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter |
| title_full | Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter |
| title_fullStr | Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter |
| title_full_unstemmed | Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter |
| title_short | Potential Accuracy of Echo-Signal Delay Measurement by Space-Based Radar Altimeter |
| title_sort | potential accuracy of echo signal delay measurement by space based radar altimeter |
| topic | спутниковый высотомер измерение запаздывания оценка по максимуму правдоподобия граница крамера-рао |
| url | https://re.eltech.ru/jour/article/view/159 |
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