Acronyms
1G-NAV
First-Generation Navigation Satellite System
2G-NAV
Second-Generation Navigation Satellite System
2SOPS
2nd Space Operation Squadron
3G-NAV
Third-Generation Navigation Satellite System
A/S
Anti-spoofing
ABMA
US Army Ballistic Missile Agency
AFB
US Air Force Base
AFSCN
Air Force Satellite Control Network
AGN
Active Galactic Nuclei
AIS
American Interplanetary Society, or Automatic Identification
System
AIT
Assemble, Integration and Test
ANS
Astronomical Netherlands Satellite
AOD
Age of Data
AP
Accretion Powered pulsar
ARGOS
Advanced Research and Global Observation Satellite
ARS
American Rocket Society
AS
Apollo-Saturn combination
ASCA
Advanced Satellite for Cosmology and Astrophysics
ASK
All-Sky Monitor
AX
Anomalous X-ray pulsar
AXAF
Advanced X-ray Astrophysics Facility
BCRS
Barycentric Celestial Reference System
BDCS
BeiDou Coordinate System
BDS
BeiDou Navigation Satellite System
BDT
BeiDou Navigation Satellite System Time
BIH
Bureau International de l’Heure
BIPM
Bureau International des Poids et Measures
BIS
British Interplanetary Society
BJ
Big Joe rocket
BTS
BIH Terrestrial System
CalTech
California Institute of Technology
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