Selective Availability: A Bad Memory for GPS Developers and Users - Spirent
Random Tech Stuff: The day GPS Selective Availability (SA) was switched off
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Error analysis for the Global Positioning System - Wikipedia
GPS Accuracy With and Without Selective Availability | Time and Navigation
Appendix A: Effects of Selective Availibility (SA) and Antispoofing (AS) | Airborne Geophysics and Precise Positioning: Scientific Issues and Future Directions |The National Academies Press