Considerations for coherent integration in spaceborne GNSS-Reflectometry

The fundamental observable in Global Navigation Satellite System Reflectometry (GNSS-R) is the so-called DelayDoppler Map (DDM), which is derived from the cross-correlation of the reflected signal with either the direct signal or a locally generated replica of the transmitted signal as implemented i...

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Detalles Bibliográficos
Autores: Abbas, Yasir, Khan, Shah Zahid, Edwar, Edwar, Jallad, Abdul-Halim, Camps Carmona, Adriano José|||0000-0002-9514-4992
Tipo de recurso: artículo
Fecha de publicación:2025
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:2117/439485
Acceso en línea:https://hdl.handle.net/2117/439485
https://dx.doi.org/10.1109/LGRS.2025.3581702
Access Level:acceso abierto
Palabra clave:Coherent integration
Delay-Doppler map (DDM)
Global Navigation Satellite System Reflectometry (GNSS-R)
Reflectometry
Signal of opportunity
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
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spelling Considerations for coherent integration in spaceborne GNSS-ReflectometryAbbas, YasirKhan, Shah ZahidEdwar, EdwarJallad, Abdul-HalimCamps Carmona, Adriano José|||0000-0002-9514-4992Coherent integrationDelay-Doppler map (DDM)Global Navigation Satellite System Reflectometry (GNSS-R)ReflectometrySignal of opportunityÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaçosThe fundamental observable in Global Navigation Satellite System Reflectometry (GNSS-R) is the so-called DelayDoppler Map (DDM), which is derived from the cross-correlation of the reflected signal with either the direct signal or a locally generated replica of the transmitted signal as implemented in our algorithm. Efficient coherent integration is essential for enhancing the signal-tonoise ratio (SNR) and improving the quality of the retrieved data products. This work investigates the limitations of coherent integration in conventional GNSS-R (cGNSS-R) and proposes a novel blind compensation technique to extend integration time by mitigating phase differences caused by navigation bit changes and propagation effects. The maximum length of coherent integration depends on the application; however, achieving a higher SNR within the same integration time enhances the quality of DDMs. Simulation results obtained from high-dynamic synthetic data demonstrate the effectiveness of the proposed technique. Additionally, real data from the UK-DMC reflectometry mission is used to validate the approach.This work was supported by ASPIRE, United Arab Emirates University under Grant ViP21-004.Peer ReviewedInstitute of Electrical and Electronics Engineers (IEEE)20252025-06-2320252025-07-28journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/439485https://dx.doi.org/10.1109/LGRS.2025.3581702reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4394852026-05-27T15:37:01Z
dc.title.none.fl_str_mv Considerations for coherent integration in spaceborne GNSS-Reflectometry
title Considerations for coherent integration in spaceborne GNSS-Reflectometry
spellingShingle Considerations for coherent integration in spaceborne GNSS-Reflectometry
Abbas, Yasir
Coherent integration
Delay-Doppler map (DDM)
Global Navigation Satellite System Reflectometry (GNSS-R)
Reflectometry
Signal of opportunity
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
title_short Considerations for coherent integration in spaceborne GNSS-Reflectometry
title_full Considerations for coherent integration in spaceborne GNSS-Reflectometry
title_fullStr Considerations for coherent integration in spaceborne GNSS-Reflectometry
title_full_unstemmed Considerations for coherent integration in spaceborne GNSS-Reflectometry
title_sort Considerations for coherent integration in spaceborne GNSS-Reflectometry
dc.creator.none.fl_str_mv Abbas, Yasir
Khan, Shah Zahid
Edwar, Edwar
Jallad, Abdul-Halim
Camps Carmona, Adriano José|||0000-0002-9514-4992
author Abbas, Yasir
author_facet Abbas, Yasir
Khan, Shah Zahid
Edwar, Edwar
Jallad, Abdul-Halim
Camps Carmona, Adriano José|||0000-0002-9514-4992
author_role author
author2 Khan, Shah Zahid
Edwar, Edwar
Jallad, Abdul-Halim
Camps Carmona, Adriano José|||0000-0002-9514-4992
author2_role author
author
author
author
dc.subject.none.fl_str_mv Coherent integration
Delay-Doppler map (DDM)
Global Navigation Satellite System Reflectometry (GNSS-R)
Reflectometry
Signal of opportunity
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
topic Coherent integration
Delay-Doppler map (DDM)
Global Navigation Satellite System Reflectometry (GNSS-R)
Reflectometry
Signal of opportunity
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
description The fundamental observable in Global Navigation Satellite System Reflectometry (GNSS-R) is the so-called DelayDoppler Map (DDM), which is derived from the cross-correlation of the reflected signal with either the direct signal or a locally generated replica of the transmitted signal as implemented in our algorithm. Efficient coherent integration is essential for enhancing the signal-tonoise ratio (SNR) and improving the quality of the retrieved data products. This work investigates the limitations of coherent integration in conventional GNSS-R (cGNSS-R) and proposes a novel blind compensation technique to extend integration time by mitigating phase differences caused by navigation bit changes and propagation effects. The maximum length of coherent integration depends on the application; however, achieving a higher SNR within the same integration time enhances the quality of DDMs. Simulation results obtained from high-dynamic synthetic data demonstrate the effectiveness of the proposed technique. Additionally, real data from the UK-DMC reflectometry mission is used to validate the approach.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-06-23
2025
2025-07-28
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/439485
https://dx.doi.org/10.1109/LGRS.2025.3581702
url https://hdl.handle.net/2117/439485
https://dx.doi.org/10.1109/LGRS.2025.3581702
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers (IEEE)
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers (IEEE)
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 15,811543

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