Moog Crossbow NAV440 Series User Manual
Page 15
NAV440 User Manual
7430‐0131‐01 Rev. F
Page 15
Term
Definition
MTBF
Mean Time Between Failure
PPS
Precise Positioning Service
QTP
Qualification Test Plan
SAASM
Selective Availability / Anti‐Spoofing Module
SDGPS
Satellite Differential GPS
Soft error
Persistent error, repeated many times within a period of time
Soft iron
Magnetism is not retain
magnetic field
ed; magnetism only occurs while the material exposed to a
VDC
Voltage Direct Current
VG
Vertical Gyroscope
WAGE
Wide Area GPS Enhancement