астрономічний орієнтир
attitude-and-heading reference system / attitude and heading reference system (AHRS)
celestial body
celestial and satellite navigation systems
celestial coordinate system
celestial equator
celestial horizon
celestial meridian
celestial monitoring
celestial navigation system
celestial sphere
celestial time
celestial navigation
atmosphere-bearing celestial body
celestial forces
celestial guidance
celestial navigation instrument
celestial position finding
celestial-inertial guidance
grid reference box
grid reference system
guidance reference system
gyroscopic reference unit (GRU)
lay reference number
map reference
map reference code
military grid reference system (MGRS)
NATO Master Cross Reference List (NMCRL) (logistics)
numbered reference position system
reference
reference diversion point
reference data
reference number (order / message / report)