The Wideband satelliteconstellation, which will include six satellites by 2013, aims to provide advanced communications capabilities for U.S. and Australian warfighters.
You could still fail to see the value, considering that the 66-satellite constellation went bankrupt just 8 months after its commercial launch last January.
Made up of a 24-satellite constellation encircling the Earth, the GPS system helps hikers, motorists, pilots and mariners navigate their way by giving them an accurate fix on their location.
It should be noted that China has broken with Europe's Galileo navigation satellite program and will loft its own 30 satelliteconstellation to compete with the United States, Russian and European NavSat Systems.
Building a geostationary satellite that can monitor such emissions for many years is very challenging, and the existing constellation therefore was designed to do just that.