US: Lockheed Martin-developed GPS satellites already in orbit will participate in testing a new modernised civilian navigation message (CNAV) capability designed to enhance GPS navigation service. US Air Force Space Command officials plan to begin formal testing of the new CNAV capability on the operational GPS constellation during the summer of 2013. These tests will ensure enterprise-level readiness to operate, broadcast, and receive modernised civil navigation messages using L2C and L5 signals prior to the expected deployment of the Next Generation Operational Control System (OCX) in mid-2016.
The CNAV testing planned for this summer is the next major step in the Air Force’s GPS modernisation programme. The testing is critical in checking out Control Segment capabilities, operational procedures, SV capabilities, and user equipment design.
Source: Avionics Intelligence