Moog Crossbow NAV440 Series - 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