numbered reference position system

attitude-and-heading reference system / attitude and heading reference system (AHRS)

numbered concentration of fire

commander of a numbered army corps

launching position (missile position)

changeover from travelling position to fire position

position and navigation unit / position navigation unit (PNU)

in position / in-position

grid reference system

guidance reference system

military grid reference system (MGRS)

World Geographic Reference System (WGRS); georef

muzzle reference system (MRS)

inertial reference system

strapdown attitude heading reference system

strapdown inertial reference system

vertical reference system

attitude-and-heading reference system (AHRS)

heading and attitude reference system

replacement attitude and heading reference system

attitude and heading reference system (AHRS)

world geographic reference system

position and azimuth determining system (PADS)

position determining system (PDS)

Enhanced position location reporting system (EPLRS)

fire extinguishing system sprinkler system and fire alarm system

grid reference box

gyroscopic reference unit (GRU)

lay reference number

map reference

map reference code

NATO Master Cross Reference List (NMCRL) (logistics)

reference