Títol:
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Mitigation of direct signal cross-talk and study of the coherent component in GNSS-R
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Autor/a:
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Martín Alemany, Francisco; Camps Carmona, Adriano José; Fabra Cervellera, Fran; Rius Jordán, Antonio; Martín Neira, Manuel; D'Addio, Salvatore; Alonso García, Alberto
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Altres autors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
Abstract:
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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. |
Abstract:
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Peer Reviewed |
Matèries:
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica -Global Positioning System -Altitudes--Measurement -Autocorrelation function (ACF) -Coherence time -Global Navigation Satellite System Reflectometry (GNSS-R) -Multipath -Typhoon -Ocean altimetry -GNSS (Sistema de navegació) -Altituds -- Mesurament |
Drets:
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Tipus de document:
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Article - Versió publicada Article |
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