11 points observing system
advanced land observing satellite ALOS
advanced land observing satellite ALOS image
Automatic meteorological observing system
Automatic Observing Station
Automatic observing system
baseline observing station [GAW]
climate observing station
Climate Observing System
coastal observing station
Earth observing technology
exmicrocosmic observing
forest hydro-ecology observing and measuring station
geophysical multilayer space observing system
Global Observing System
global observing system {= GOS}