The USCG informed that the US Air Force released a memorandum to inform the GPS community of an update to the GPS ground control software that may impact some user equipment.
The new update was applied in September 2017 and the Navigation Center (NAVCEN) received reports that the change affected the operation of some user equipment. After that, the US Air Force went back to the previous version.
The software update will be installed again, until March 1, 2018, in order to give time for manufacturers to bring GPS receivers into compliance with the Interface Specification.
This software update complies with Interface Specification IS-GPS-200, which defines the requirements related to the interface between the GPS space and user segments for radio frequency link 1 (L1) and link 2 (L2).
“Users experiencing GPS problems are reminded that NAVCEN accepts GPS reports regarding degradations, disruptions, interference, or other incidents or anomalies on USCG’s GPS Problem Reporting webpage,” USCG informed.
Furthermore, USCG encouraged users to follow the below steps before reporting a GPS problem:
- Reset your device by cycling power to the unit.
- Confirm the settings for your GPS unit or application.
- Refer to your equipment manual.
- Update your equipment software or firmware and GPS mapping software.
- Contact your equipment manufacturer for additional assistance.
You can see the the memorandum be the US Air Force in the PDF below
