GALILEO - Understanding GPS: Principles and Applications - page 594

The activities contained under phase E2 address full system deployment (lasting
around 24 months), long-term operations, and replenishment. It will consist of the
launch of all remaining satellites (up to 30) and deployment of the full operational
Ground Segment, including all required redundancies in order to comply with the
full mission requirements in terms of performance and service area. The operations
phase is planned to start during deployment of the full system, and it will consist of
routine operations as well as Ground Segment maintenance and replenishment of
the satellite constellation upon failure of one or more spacecraft. This phase is
planned to last over the design lifetime of the system, about 20 years.

References

[1] GALILEO Mission High Level Definition, September 2003.

[2] Ries, L., et al., “A Software Simulation Tool for GNSS2 BOC Signals Analysis,” Proc. of

ION GPS 2002 , Portland, OR, September 24-27, 2002, pp. 2225-2239.

[3] Pratt, A. R., and J. I. R. Owen, “Performance of GPS/Galileo Receivers Using m-PSK BOC

Signals,” Proc. of ION NTM 2004, 2004.

[4] Issler, J.-L., et al., “Spectral Measurements of GNSS Satellite Signals Need for Wide Trans-

mitted Bands,” Proc. of ION GPS 2003, 2003.

[5] Hein, G. W., et al., “Status of GALILEO Signal Design and Frequency Plan,” Proc. of ION

GPS 2002 , Portland, OR, September 24-27, 2002 .

[6] Soellner, M., “Comparision of AWGN Code Tracking Accuracy for Alternative BOC:

Complex LOC and Complex-BOC Modulation Options in Galileo E5-Band,” Proc. of
GNSS 2003, 2003.

[7] Erhard, P., and E. Armengou-Miret, “Status and Description of Galileo Signals Structure

and Frequency Plan,” European Space Agency Technical Note, April 2004.

[8] Merrigan, M. J., et al. “A Refinement of the World Geodetic System 1984 Reference

Frame,” Proc. of ION GPS 2002 , Portland, OR, September 24-27, 2002, pp. 1519-1529.

[9] Lemoine, F. G., et al., “The Development of the Joint NASA GSFC and NIMA Geopotential

Model EGM96,” NASA/TP-1998-206861, NASA Goddard Space Flight Center, Greenbelt,
MA, July 1998.

[10] Hahn, J., and E. Powers, “GPS and Galileo Timing Interoperability,” Proc. of GNSS 2004 ,

Rotterdam, the Netherlands, May 2004.

[11] Zandbergen, R., et al., “Galileo Orbit Selection,” Proc. of ION GNSS 2004, Long Beach,

CA, September 2004.

[12] Emma, F., “Onboard Clocks for Galileo Development Status,” Proc. of International

Workshop on Galileo Time, Turin, Italy, September 27-28, 2004.

[13] Oehler, V., et al., “The Galileo Integrity Concept,” Proc. of ION GNSS 2004 , Long Beach,

CA, September 2004.