GPS Modernization
Samuelson, Robert J / Mata, Marlin![GPS Modernization](https://support.digitalhusky.com/media/annotations/sorted/176/17690449/CHSBZCOP0317690449.jpg)
The Global Positioning System (GPS) provides positioning, navigation, and timing (PNT) data to users world-wide. This book discusses the Department of Defense's plans to develop and purchase new satellites and also the challenges in sustaining and upgrading the GPS.