Contents

• Editorial

• TechWatch
  Harpreet Rooprai



• GPS Augmentation Systems
  Anamika Das
  
  
• US National Space-Based Positioning, Navigation And Timing Policy
  Anamika Das
  
  
• The European EGNOS Project: Mission, Program and System Description
  Dr. Javier Ventura, Félix Torán, Juan-Pedro Lam, Philippe Michel
  
  
• Quasi-Zenith Satellite System: Status and Design
  Motohisa Kishimoto
  
  
• Modeling of Indian Ionosphere for GNSS Augmentation Systems
  Dr. A.D.Sarma, D.Venkata Ratnam, D. Krishna Reddy, K. Ravi Chandra
  
  
• Monitoring the Position Integrity in Road Transport: Using SBAS/EGNOS and Communication Issues
  José Santa, Benito Úbeda, Antonio F. G. Skarmeta
  
  
• SBAS With Ground-Based Atomic Reference Station
  Fabrizio Tappero, Andrew Dempster, Toshiaki Iwata
  
  

Interview

• GPS has arrived in the mass market
  Kanwar Chadha