Table of Contents
International Journal of Navigation and Observation
Volume 2008 (2008), Article ID 793868, 9 pages
Research Article

Comparison between Galileo CBOC Candidates and BOC(1,1) in Terms of Detection Performance

1Dipartimento di Elettronica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10138 Torino, Italy
2Istituto Superiore Mario Boella, Corso Castelfidardo 30/A, 10138 Torino, Italy
3Galileo Unit, European Commission DG-Tren, 28 Rue de Mot, 1049 Brussels, Belgium

Received 31 July 2007; Revised 30 December 2007; Accepted 25 February 2008

Academic Editor: Gerard Lachapelle

Copyright © 2008 Fabio Dovis et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Many scientific activities within the navigation field have been focused on the analysis of innovative modulations for both GPS L1C and Galileo E1 OS, after the 2004 agreement between United States and European Commission on the development of GPS and Galileo. The joint effort by scientists of both parties has been focused on the multiplexed binary offset carrier (MBOC) which is defined on the basis of its spectrum, and in this sense different time waveforms can be selected as possible modulation candidates. The goal of this paper is to present the detection performance of the composite BOC implementation of an MBOC signal in terms of detection and false alarm probabilities. A comparison among the CBOC and BOC(1,1) modulations is also presented to show how the CBOC solution, designed to have excellent tracking performance and multipath rejection capabilities, does not limit the acquisition process.