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Título:
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Maximum likelihood time-of-arrival estimation using antenna arrays: Application to global navigation satellite systems
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Autor/a:
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Seco Granados, Gonzalo; Fernández Rubio, Juan Antonio
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
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Abstract:
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The problem of estimating the time-of-arrival (TOA) of a known signal in the presence of interferences and multipath propagation is addressed. This problem, is essential in high precision receivers of the Global Navigation Satellite Systems. This paper presents the maximum likelihood TOA estimator when an antenna array is used in the receiver. The desired signal impinges the array with a known direction-of-arrival (DOA) vector, which allows to model all the undesired signal as unknown and arbitrary spatially correlated noise. This simplified model makes only the desired parameters remain in the formulation explicitly, then avoiding complex maximization schemes needed by other models. The fact that estimator is formulated in the frequency domain permits the introduction of the temporal correlation of the noise. Simulation results illustrate the satisfactory performance of the estimator. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
-Telecommunication
-Time-of-arrival estimation
-Antenna arrays
-Array signal processing
-Direction-of-arrival estimation
-Maximum likelihood estimation
-Multipath channels
-Radiofrequency interference
-Satellite navigation
-Telecomunicació |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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