Acronym	Full Name
ACs	Analysis Centers
AR	Ambiguity Resolution
CNES/CLS	Centre National d’Etudes Spatiales/Collecte de Localisation Satellite
CODE	Center for Orbit Determination in Europe
DOY	Day Of Year
ECOM	Empirical CODE Orbit Model
GA	Geoscience Australia
GEO	GEostationary Orbit
GFZ	GeoForschungsZentrum Potsdam
GLONASS	GLObal Navigation Satellite System
GPS	Global Positioning System
HMW	Hatch–Melbourne–Wübbena combination
IERS	International Earth Rotation Service
iGMAS	international GNSS Monitoring and Assessment Service
IGS	International GNSS Service
IGSO	Inclined GeoSynchronous Orbit
ILRS	International Laser Ranging Service
ISL	Inter-Satellite Link
JAXA	Japan Aerospace Exploration Agency
LRA	Laser Retroreflector Array
MEO	Medium Earth Orbit
MGEX	Multi-GNSS Experiment Extension
NL	Narrow-Lane
NPs	Normal Points
ON	Orbit-Normal
PANDA	Position And Navigation Data Analyst software
PCO	Phase Center Offset
PCV	Phase Center Variation
PDOP	Position Dilution Of Precision
POD	Precise Orbit Determination
PPP	Precise Point Positioning
PRN	Pseudo Random Noise
RMS	Root Mean Square
SLR	Satellite Laser Ranging
SRP	Solar Radiation Pressure
STD	STandard Deviation
TUM	Technische Universität München
WHU	Wuhan University
WL	Wide-Lane
YS	Yaw-Steering
ZTDs	Zenith Troposphere Delays