9[7]Udo Rossbach,Robert Wolf and Roland Kaniuth.GPS and Gallieo Orbit and Ephemeris Simulation[C].ION GPS/GNSS 2003,9-12 September 2003,Portland,OR,2431-2435.
10[12]ARINC Engineering Service,LLC.Navstar GPS Space Segment/Navigation User Interfaces[S].IS-GPS-200,Revision D,7 December 2004.