GNSS Array-based Acquisition: Theory and Implementation (2012)
Abstract / truncated to 115 words
This Dissertation addresses the signal acquisition problem using antenna arrays in the general framework of Global Navigation Satellite Systems (GNSS) receivers. GNSSs provide the necessary infrastructures for a myriad of applications and services that demand a robust and accurate positioning service. GNSS ranging signals are received with very low signal-to-noise ratio. Despite that the GNSS CDMA modulation offers limited protection against Radio Frequency Interferences (RFI), an interference that exceeds the processing gain can easily degrade receivers' performance or even deny completely the GNSS service. A growing concern of this problem has appeared in recent times. A single-antenna receiver can make use of time and frequency diversity to mitigate interferences, even though the performance of these ... toggle 14 keywordsGNSS – detection theory – signal acquisition – array signal processing – GPS – galileo – interference protection – signal quantization – satellite positioning – software defined receivers – fpga systems – software processors – real-time signal processing – rf front-end
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