The fourth GPS III satellite is now planned to launch on Nov 5 after the initially planned launch got aborted.
As reported by GPSWorld, the Lockheed Martin-built GPS III SV04 will be launched aboard a SpaceX Falcon 9 rocket — the third National Security Space Launch (NSSL) mission on a Falcon 9 rocket. It will be the second U.S. Space Force (USSF) first-stage booster recovery, and the sixth USSF launch.
A live feed will start 20 minutes before the launch. A simulcast of the broadcast can be viewed at www.spacex.com.
GPS III SV04 will be launched to extend the current GPS constellation comprised of 31 operational spacecraft. GPS satellites operate in Medium Earth Orbit (MEO) at an altitude of approximately 20,200 km (12,550 miles) in six orbital planes. Each satellite circles the earth twice per day.
GPS III brings new capabilities to users such as the new L1C civilian signal, which opens the window for future interoperability with international satellite navigation systems.