Acquisition of the Galileo AltBoc signal with a fixed and adaptive threshold

Abstract

The American Global Positioning System GPS had indeed monopolized the world of satellite navigation for several years; however, its military use, its limited accuracy and the voluntary degradation of the signal had pushed other countries to develop their own systems. The largest project of its kind in this field, would be, the European Galileo system. The aim of this work is the statistical modeling of the acquisition stage for the signal recently proposed for the European system Galileo AltBoc E5. In this context, a brief study of AltBoc signal is given, then, different architectures acquisition will be modeled and analyzed in a statistical framework with a fixe threshold. Then we propose an introduction of a Cell Averaging Constant False Alarm Rate (CA-CFAR) detector. The obtained theoretical results are validated by Monte-Carlo simulations.