Almanac Antispoofing (AS) Bandwidth Bit Carrier Carrier Phase Carrier-to-Noise Power Density (C/N0) Channel Chip Coarse Acquisition (C/A)-Code Cold Start Control Segment Course over the Ground Cycle Slip Demodulation Differential GPS (DGPS) Dilution of Precision (DOP) Distance Root Mean Square (DRMS) Electromagnetic Spectrum En Route Ephemeris Epoch Error Budget Fix Frequency Frequency Modulation Geodesy Geodetic Datum Geoid Geometric Dilution of Precision (GDOP) Geostationary Satellites GLONASS GNSS GPS (System) Time GPS Week Height Aiding Horizontal Dilution of Precision (HDOP) Inmarsat Interference Ionosphere Keplerian Elements Kilohertz Kinematic L1 Frequency Band L2 Frequency Band Latitude L-band Line of Position (LOP) Longitude Megahertz (MHz) Modulation Multipath Nautical Mile Navigation Message NMEA 0183 Noise Notice Advisory to GLONASS Users (NAGU) Notice Advisory to NAVSTAR Users (NANU) Orthometric Height Oscillator Parity Precision (P)-Code Pseudorandom Noise (PRN) Code Pseudorange Quadrifilar Helix Ranging Receiver Autonomous Integrity Monitoring (RAIM) RINEX RTCM SC-104 Selective Availability (SA) Signal to Noise Ratio (SNR) Space Segment Spatial Decorrelation Spoofing Spread-Spectrum Temporal Decorrelation Tropospheric Delay Universal Time Coordinated (UTC) UT1 Warm Start World Geodetic System 1984 (WGS 84) Y-Code Z-Count