Fully-focused delay-doppler processing algorithms for radar altimetry systems

Evaluation of ice-height change in Antartica, forecasting river discharges or estimating water surface elevation in coastal waters are some of many applications of Altimetry science. The main objective of a satellite Radar Altimeter is to measure the height of reflecting objects on earth. Those refl...

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Detalles Bibliográficos
Autor: Hernández Burgos, Sergi
Tipo de recurso: tesis de maestría
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/334666
Acceso en línea:https://hdl.handle.net/2117/334666
Access Level:acceso embargado
Palabra clave:Radar
Algorithms
Altimeter
Altimetry
SAR Altimetry
Delay-Doppler
Fully-Focused
CryoSat-2
Sentinel-3.
Algorismes
Altímetres
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
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spelling Fully-focused delay-doppler processing algorithms for radar altimetry systemsHernández Burgos, SergiRadarAlgorithmsAltimeterAltimetryAltimeterRadarSAR AltimetryDelay-DopplerFully-FocusedCryoSat-2Sentinel-3.RadarAlgorismesAltímetresÀrees temàtiques de la UPC::Enginyeria de la telecomunicacióEvaluation of ice-height change in Antartica, forecasting river discharges or estimating water surface elevation in coastal waters are some of many applications of Altimetry science. The main objective of a satellite Radar Altimeter is to measure the height of reflecting objects on earth. Those reflections are obtained from the echoes of electromagnetic waves, which are continuously sent by the altimeter instrument. The conventional satellite altimeter uses the echo delays to estimate the height. One of the main features to improve in radar altimetry systems is the along-track resolution (i.e. the capacity to distinguish between two point-targets). Along-track resolution improvements can be achieved when using processing algorithms that coherently sum groups of received electromagnetic pulses, which have been reflected by the same target. Nowadays, operational altimeters achieve along-track resolutions over 200 meters thanks to Unfocused Delay-Doppler algorithms. However, Fully-Focused (FF) algorithms can improve the along-track resolution to the order of sub-meter. Two main approaches of Fully-Focused methods have been presented: Fully-Focused in Time Domain and Fully-Focused in Frequency Domain. Although both of them achieve the same along-track resolution, FF in Frequency has demonstrated to be considerably faster than FF in Time. In this thesis, we introduce the theory of both FF methods, and present the results and applications of Fully-Focused in Time Domain algorithm.Universitat Politècnica de CatalunyaRoca Aparicio, MonicaBroquetas Ibars, Antoni20202020-07-0120202020-12-1820302030-12-18master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2117/334666reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengembargoed accesshttp://purl.org/coar/access_right/c_f1cfinfo:eu-repo/semantics/embargoedAccessoai:upcommons.upc.edu:2117/3346662026-05-27T15:37:01Z
dc.title.none.fl_str_mv Fully-focused delay-doppler processing algorithms for radar altimetry systems
title Fully-focused delay-doppler processing algorithms for radar altimetry systems
spellingShingle Fully-focused delay-doppler processing algorithms for radar altimetry systems
Hernández Burgos, Sergi
Radar
Algorithms
Altimeter
Altimetry
Altimeter
Radar
SAR Altimetry
Delay-Doppler
Fully-Focused
CryoSat-2
Sentinel-3.
Radar
Algorismes
Altímetres
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
title_short Fully-focused delay-doppler processing algorithms for radar altimetry systems
title_full Fully-focused delay-doppler processing algorithms for radar altimetry systems
title_fullStr Fully-focused delay-doppler processing algorithms for radar altimetry systems
title_full_unstemmed Fully-focused delay-doppler processing algorithms for radar altimetry systems
title_sort Fully-focused delay-doppler processing algorithms for radar altimetry systems
dc.creator.none.fl_str_mv Hernández Burgos, Sergi
author Hernández Burgos, Sergi
author_facet Hernández Burgos, Sergi
author_role author
dc.contributor.none.fl_str_mv Roca Aparicio, Monica
Broquetas Ibars, Antoni
dc.subject.none.fl_str_mv Radar
Algorithms
Altimeter
Altimetry
Altimeter
Radar
SAR Altimetry
Delay-Doppler
Fully-Focused
CryoSat-2
Sentinel-3.
Radar
Algorismes
Altímetres
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
topic Radar
Algorithms
Altimeter
Altimetry
Altimeter
Radar
SAR Altimetry
Delay-Doppler
Fully-Focused
CryoSat-2
Sentinel-3.
Radar
Algorismes
Altímetres
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
description Evaluation of ice-height change in Antartica, forecasting river discharges or estimating water surface elevation in coastal waters are some of many applications of Altimetry science. The main objective of a satellite Radar Altimeter is to measure the height of reflecting objects on earth. Those reflections are obtained from the echoes of electromagnetic waves, which are continuously sent by the altimeter instrument. The conventional satellite altimeter uses the echo delays to estimate the height. One of the main features to improve in radar altimetry systems is the along-track resolution (i.e. the capacity to distinguish between two point-targets). Along-track resolution improvements can be achieved when using processing algorithms that coherently sum groups of received electromagnetic pulses, which have been reflected by the same target. Nowadays, operational altimeters achieve along-track resolutions over 200 meters thanks to Unfocused Delay-Doppler algorithms. However, Fully-Focused (FF) algorithms can improve the along-track resolution to the order of sub-meter. Two main approaches of Fully-Focused methods have been presented: Fully-Focused in Time Domain and Fully-Focused in Frequency Domain. Although both of them achieve the same along-track resolution, FF in Frequency has demonstrated to be considerably faster than FF in Time. In this thesis, we introduce the theory of both FF methods, and present the results and applications of Fully-Focused in Time Domain algorithm.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-07-01
2020
2020-12-18
2030
2030-12-18
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/334666
url https://hdl.handle.net/2117/334666
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv embargoed access
http://purl.org/coar/access_right/c_f1cf
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv embargoed access
http://purl.org/coar/access_right/c_f1cf
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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