ground reference navigation station
images with less ground reference points
meshed ground reference plane
Navigation reference image
time reference navigation
ground to ground missile
ground to ground tactical missile
Ground-to-air missile virtual proving ground
ground-to-air proving ground
Ground-to-Ground Campaign Tactical Missile
ground-to-ground laser ranging
Ground-to-ground Missile
ground-to-ground tactical missile
ground-to-ground tactical missile weapon system in campaign
inertial [reference] frame， inertial [reference] system