Unlike other commercial survey systems, the embedded radios, antispoofing
receiver, and other components of the controller reduce cabling, standardize batteries, decrease setup time, and reduce overall maintenance.
Spam-identifying capabilities have been enhanced with six spam prevention methods: real-time blacklisting, DNS lookup, anti-relay, antispoofing
, cookie blocking, and keyword filtering.
has always been a feature of military GPS, using encrypted signals as the first line of defense.
The objectives have been updated to consider selective-availability antispoofing
modules (SAASMs) and other developments surrounding the easily jammed GPS system.
Access to the mentioned PPS position accuracies is controlled through two cryptographic features denoted as Antispoofing
(AS) and Selective Availability (SA).