The U.S. Space Force Space and Missile Systems Center (SMC) has issued official, signed Interface Specification (IS) and Interface Control Document (ICD) revisions:
IS-GPS-200M Navstar GPS Space Segment/Navigation User Interfaces
IS-GPS-800H Navstar GPS Space Segment/User Segment L1C Interface
IS-GPS-705H Navstar GPS Space Segment/User Segment L5 Interface
ICD-GPS-240D Navstar GPS Control Segment to User Support Community Interface
These documents can be found at GPS Technical References (uscg.gov) and at https://www.gps.gov/technical//#current
Past versions of these documents are archived at GPS Technical References (uscg.gov) and at https://www.gps.gov/technical/icwg/old-versions/ where changes (Interface Revision Notices (IRN)) incorporated into the new documents also can be found.
The Space Force is soliciting public comments on the following Proposed Change Notices (PCNs).
RFC-00467: 2021 Proposed Changes to the Public Documents
- Proposed Changes to IS-GPS-200L (349 KB PDF)
- Proposed Changes to IS-GPS-705G (44 KB PDF)
- Proposed Changes to IS-GPS-800G (31 KB PDF)
While these PCNs use the August 2020 versions of the ICDs as baseline documents, any approved changes will be incorporated by the next document revisions. Comments are due August 24, 2021
SMC has also announced the date of the next Public Interface Control Working Group meeting. Full details will be provided in an upcoming Federal Register Notice but advance notice can be found at https://www.gps.gov/technical/icwg/meetings/2021/