George Torres 
Global Positioning System (GPS) 
Performance, Challenges and Emerging Technologies

The Global Positioning System (GPS) is used extensively in both the military and civilian communities for such diverse activities as navigation, surveying, remote sensing, asset management and precise timing. Ionospheric scintillations are rapid variations in the amplitude and phase of transionospheric radio signal which affect the accuracy and reliability of GPS systems. This book provides new research on the performance, challenges and emerging technologies of Global Positioning Systems.