guidance reference system

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

ground-reference guidance

geographical reference guidance

grid reference system

military grid reference system (MGRS)

numbered reference position system

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

active infrared (IR) guidance system

air electronic guidance information system (AEGIS)

automated target detection, tracking, co-ordinate finding and interceptor guidance system

beam rider guidance system

command guidance system

control and guidance system

guidance and control system

guidance system

heat passive homing guidance system

homing guidance system

inertial guidance system

interceptor guidance system

internal guidance system

laser guidance system

missile guidance system