The links to documents supporting GPS III, as well as the L2 and L5 proposals, are now consolidated on this page.

• L1
  • IS-GPS-200: Navstar GPS Space Segment / Navigation User Interfaces
    • Current Baseline: IS-GPS-200D with IRN 1 dated 7 Mar 06 (987KB pdf)
    • Recent IRNs: IRN-200D-001 (114KB pdf)
       
  • L1 Civil Signal Modernization Report (short form, 1 MB pdf)
  • L1 Civil Signal Modernization Report (long form, 7MB pdf)
  • IS-GPS-800, Navstar GPS Space Segment / User Segment L1C Interfaces, dtd 04 Sept 2008 (135 pgs; 794 KB)
• L2
  • The Modernized L2 Civil Signal (PDF)
  • The New L2 Civil Signal (PDF)
  • ICD-GPS-200 Rev. C (Updated)
• L5
  • ICD-GPS-705, 02 Dec, Rev 2
     
• GPS III
  • GPS III Statement of Objectives