Instruction Manual

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age16
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GNAV540UserManual
7430‐0808‐01Rev.B
P
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Glossary
Table4Glossary
Term Definition
6DOF SixDegreeofFreedom
ACL Accelerometer
AHRS AttitudeHeadingReference
BIT BuiltInTest
DSP DigitalSignalProcessor
ECEF Earth‐CenteredEarth‐Fixed
ESS EnvironmentalStressScreening
EKF ExtendedKalmanFilter
FIR FiniteImpulseResponse
GB‐GRAM Ground‐BasedGPSReceiverApplicationModule
GPS GlobalPositioningSystem
Hardfailure Fatalcondition,non‐operational
Hardiron Magnetismisretained(permanent)
IMU InertialMeasurementUnit
LLA LatitudeLongitudeandAltitude
LSB LeastSignificantByte
MEMS Micro‐Electro‐MechanicalSystems
MSB MostSignificantByte
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
WAAS WideAreaAugmentationSystem:enhancedaccuracyofGPSpositioning
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