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A Civil User Perspective on Near-Term and Long-Term GPS Modernization
Near-Term Long-Term GPS Modernization
2015/6/26
Sam Pullen is a Senior Research Engineer at Stanford University, where he is the director of the Local Area Augmentation System (LAAS) research effort. He has supported the FAA in developing LAAS and ...
Bounding Higher Order Ionosphere Errors for the Dual Frequency GPS User
Bounding Higher Order Ionosphere Errors Dual Frequency GPS User
2015/6/25
The advent of a second civil GPS frequency heralds a new phase of GPS performance. For single-frequency GPS users, the signal delay due to refraction through the ionosphere is the largest and most var...
The Impact of GPS Modernization on Standalone User Performance and Integrity with ARAIM
Impact GPS Modernization Standalone User Performance Integrity ARAIM
2015/6/24
Advanced RAIM, or ARAIM, extends and improves upon the traditional RAIM algorithm to detect and mitigate independent, multiple, and correlated GPS signal faults. While ARAIM depends on multiple redund...