inertial reference noun2 •An inertial frame of reference.The SSM inertial reference sensors (star trackers (ST) and/or coarse sun sensors (CSS)) are not suitable as a tracking reference for the FSM for two reasons. — 2000 •Any of various devices found in airplanes, missiles, satellites, guns, etc. that sense and calculate data such as linear acceleration and turning rate around each axis and which send that data on to other systems.Moreover, one terminal of M is connected to the inertial reference (IR). — 1974
