The inertia measurement module includes three accelerometers and three yaw rate sensors that can measure yaw, pitch, and yaw rates, with a measured yaw rate of up to 450 °/S and an acceleration of up to 5G. Accurate temperature calibration has been performed and can be used as a sensor alone or in conjunction with VBOX units. When used with VBOX 3i, IMU data can be seamlessly integrated to obtain smoother and more reliable data when satellite reception is disrupted.