Mitigation of direct signal cross-talk and study of the coherent component in GNSS-R

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor	Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.contributor.author	Martín Alemany, Francisco
dc.contributor.author	Camps Carmona, Adriano José
dc.contributor.author	Fabra Cervellera, Fran
dc.contributor.author	Rius Jordán, Antonio
dc.contributor.author	Martín Neira, Manuel
dc.contributor.author	D'Addio, Salvatore
dc.contributor.author	Alonso García, Alberto
dc.date	2015-02-01
dc.identifier.citation	Martin, F. [et al.]. Mitigation of direct signal cross-talk and study of the coherent component in GNSS-R. "IEEE Geoscience and Remote Sensing Letters", 01 Febrer 2015, vol. 12, núm. 2, p. 279-283.
dc.identifier.citation	1545-598X
dc.identifier.citation	10.1109/LGRS.2014.2335772
dc.identifier.uri	http://hdl.handle.net/2117/24365
dc.format	5 p.
dc.language.iso	eng
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
dc.subject	Global Positioning System
dc.subject	Altitudes--Measurement
dc.subject	Autocorrelation function (ACF)
dc.subject	Coherence time
dc.subject	Global Navigation Satellite System Reflectometry (GNSS-R)
dc.subject	Multipath
dc.subject	Typhoon
dc.subject	Ocean altimetry
dc.subject	GNSS (Sistema de navegació)
dc.subject	Altituds -- Mesurament
dc.title	Mitigation of direct signal cross-talk and study of the coherent component in GNSS-R
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	In Global Navigation Satellite System Reflectometry (GNSS-R), power waveforms or Delay-Doppler Maps (DDM) are incoherently averaged to reduce the standard deviation of the fluctuations caused by the speckle and thermal noise. This letter proposes a simple and innovative processing concept based on the computation of the variance of the complex waveforms. By this approach, the coherent part of the signal is subtracted from the incoherent averaged waveform. It can be useful, for example, in scenarios where reflected signal is contaminated by the direct signal, as ground-based scenarios or in future experiments such as GEROS-ISS due to the nearby multipath of direct signals.
dc.description.abstract	Peer Reviewed

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