2024-03-28T16:57:01Zhttps://www.tdx.cat/oai/requestoai:www.tdx.cat:10803/3165832017-09-01T03:15:14Zcom_10803_183col_10803_229
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Interferometric GNSS-R processing : modeling and analysis of advanced processing concepts for altimetry
[Barcelona] :
Universitat Politècnica de Catalunya,
2015
Accés lliure
http://hdl.handle.net/10803/316583
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Martín Alemany, Francisco,
autor
1 recurs en línia (249 pàgines)
Tesi
Doctorat
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
2015
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
Tesis i dissertacions electròniques
Camps Carmona, Adriano José,
supervisor acadèmic
TDX
This PhD dissertation is focused on the use of the opportunity signals from the Global Navigation Satellite Systems (GNSS), that scatter-off the Earth's surface for perform ocean mesoscale altimetry (the so called GNSS-R technique). Specially, this work analyses the capabilities of the interferometric approach (iGNSS-R) originally proposed for PARIS IoD (which will be implemented on GEROS-ISS), comparing its performance with the one obtained by the conventional approach (cGNSS-R). The main content of this PhD dissertation includes:
A comprehensive analysis of the GNSS-R cross-correlation waveform properties, analyzing the impact that the observation geometry and system parameters have on the GNSS-R observables, where parameters such as the receiver bandwidth, observation geometry, sea state, and thermal and speckle noises are analyzed.
A detailed derivation of the statistics for both the voltage and power cross-correlations (for both conventional and interferometric processing cases) validated all of them with both simulated and real data from ground-based airborne, and spaceborne experiments.
Study of the performance model of the altimetry precision based on the Cramer-Rao Bound statistical estimator theory. This study has been carried out for a wide variety of parameters concerning the overall observation system, including instrument, on-board and on-ground processing aspects, for both the conventional and interferometric GNSS-R techniques.
Analysis of experimental data from the Typhoon Investigation using GNSS-R Interferometric Signals (TIGRIS) experiment. This analysis has been used to determine and establish the boundaries and capabilities of GNSS-R towards remote sensing of typhoons. In this part, aspects such as the mitigation of the direct cross-talk contamination, GNSS multipath contamination, and preliminary results (including a novel observable) are presented.
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