Anti-spoofing
From EUROCONTROL ATM Lexicon
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| Term | anti-spoofing |
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Abbreviation
A-S
A/S
Definition
[within the GPS system]... the ability to essentially "turn off" the P-code or invoke an encrypted code (Y-code) as a means of denying access to the P-code to all but authorized users. The rationale for doing this is to keep adversaries from sending out false signals with the GPS signature to create confusion and cause users to misposition themselves.
Definition Source
ICAO (1998) WGS84 Implementation Manual, Version 2.4, Appendix A "The Global Positioning System (GPS)"
