NavCom SurveCE Integration Rev.A - Manual (Page 13)

SurvCE ™ Integration User Guide – Rev. A
xiii
Global Positioning System
Selective availability (S/A code) was disabled on 02
May 2000 at 04:05 UTC. The United States
government has stated that present GPS users use
the available signals at their own risk. The US
Government may at any time end or change
operation of these satellites without warning.
The U.S. Department of Commerce Limits
Requirements state that all exportable GPS products
contain performance limitations so that they cannot
be used to threaten the security of the United States.
Access to satellite measurements and navigation
results will be limited from display and recordable
output when predetermined values of velocity and
altitude are exceeded. These threshold values are far
in excess of the normal and expected operational
parameters of the NavCom GNSS receiver.