navigation head

position and navigation unit / position navigation unit (PNU)

penetrating head injury / open head injury

drop head body (drop-head body)

head-to-head flyoff

infrared homing head (IR homing head)

aerial navigation

aid to navigation (ATON)

communication and navigation aids (COMNAV)

constant-bearing guidance / homing / navigation

Global Navigation Satellite System (GLONASS)

Global Navigation Satellite System (GNSS)

inertial navigation and attack system (INAS)

inertial navigation system (INS)

land navigation

maritime navigation

navigation

navigation aids (NAVAIDS)

navigation bridge

navigation department

navigation radar

navigation rights

navigation satellite

NAVigation Satellites providing Time And Range (NAVSTAR)

navigation skills

navigation(al) equipment

navigational aid (NAVAIDs); aid to navigation (ATON)

piloting and navigation system

position navigation equipment

position, navigation, and timing (PNT)

positioning and navigation (POSNAV)

precision inertial navigation systems (PINS)

proportional navigation guidance