用語集
ARP : Approximate Radial-error Protected
EC : Ephemeris Correction
ECEF : Earth Centered Earth Fixed
EGNOS : European Geostationary Navigation Overlay Service
FD : Fault Detection
FDE : Fault Detection and Exclusion
FRP-96 : Federal Radio Navigation Plan1996
GEO : Geostationary
GIVE : Grid Ionospheric Vertical Error
GIVEI : Grid Ionospheric Vertical Error Indicator
GLONASS : Global 0rbiting Navigation Satellite System
GNSS : Global Navigtion Satllite Systerm
GPS : Global Positioning System
HAL : Horizontal Alert Limit
HDOP : Horizontal Dilution of Position
HEL : Horizontal Exclusion Level
HPL : Horizontal Protection Level
IDO : Issue of Data
IDOC : Issue of Data Clock
IODE : Issue of Data Ephemeris
IODI : Issue of Data Ionospheric
IODP : Issue of Data PRN mask
IODS : Service Issue of Data
IGP : Ionospheric Grid Point
IPP : Ionospheric Pierce Point
HOW : Hand Over Word
MOPS : Minimum Operational Performance Standards
MSAS : MTSAT Satellite based Augmentation System
MTSAT : Multi-functional Tranceport Satellite
PRN : Pseudo Random Noise
RAIM : Receiver Autonomous lntegrity Monitoring
SA : Selective Availability
SBAS : Satellite Based Augmentation System
UDRE : User Differential Range Estimate
UDREI : User Differential Range Estimate Indicator
UIRE : User Ionospheric Range Error
UIVE : User Ionospheric Vertical Error
URA : User Range Accuracy
UTC : Universal Time Coordinated
VDOP : Vertical Dilution of Position
VPL : Vertical Protection Level
WAAS : Wide Area Augmentation System
WGS-84 : World Geodetic System 1984
WNT : WAAS Network Time
