Cyclic Spectral Analysis of GPS signal (2014)
Abstract / truncated to 115 words
The aim of this thesis is to propose cyclostationary--based techniques in order to improve GPS system performance with respect to synchronization and parameter estimation problems, in severe noise and interference environments. A detailed analytical model is derived for the GPS-L1 signal which is shown to be second-order cyclostationary. Closed forms for the the cyclic autocorrelation functions and cyclic spectra are derived for the complex envelope of this signal. It is shown that different signal models must be considered for different data-record lengths of interest in the applications. Effect of the satellite motion on the received GPS signal is investigated in order to correctly model the propagation channel between a GPS satellite and a stationary receiver ... toggle 3 keywordsgps-l1 signal – cyclostationarity – spectral analysis
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