Galileo OS SIS ICD.indd - GSA - Europa

List of Figures
Figure 1. Space Vehicle/Navigation User Interface ......................................................................................1
Figure 2. Galileo Frequency Plan .................................................................................................................2
Figure 3. Modulation Scheme for the E5 Signal ..........................................................................................4
Figure 4. One Period of the Two Subcarrier Functions Involved in AltBOC Modulation ...............................6
Figure 5. 8-PSK Phase-State Diagram of E5 AltBOC Signal .......................................................................6
Figure 6. Modulation Scheme for the E6 Signal ...........................................................................................7
Figure 7. Modulation Scheme for the E1 CBOC Signal ...............................................................................8
Figure 8. One period of the CBOC sub-carrier for a) the L1-B signal component, and b) the L1-C signal
component ....................................................................................................................................9
Figure 9. Tiered Codes Generation ............................................................................................................12
Figure 10. LFSR Based Code Generator for Truncated and Combined M-sequences ................................13
Figure 11. Code Register Feedback Taps Representation (example for E5a-I) ...........................................14
Figure 12. Start Value Representation for Base Register 2 (fi rst code of E5a-I) ..........................................14
Figure 13. Convolutional Coding Scheme ....................................................................................................27
Figure 14. F/NAV Message Structure ...........................................................................................................28
Figure 15. I/NAV Message Structure in the Nominal Mode ..........................................................................33
viii © European Union 2010
Document subject to terms of use and disclaimers p. ii-iii
OD SIS ICD, Issue 1, February 2010