The STIM318 from Safran Group is an Inertial Measurement Unit that consists of 3 high-accuracy MEMS-based gyros, 3 high-stability accelerometers, and 3 inclinometers in a miniature package. This IMU has a range of 400 degrees/sec and gyro bias instability of 0.3 degrees/h. It has a gyro angular random walk of 0.15 degrees/√h and an accelerometer bias instability of 0.003 mg. The IMU communicates via a standard high-level RS-422 interface and uses a 32-bit RISC ARM microcontroller. It features a gyro that is based on Safran ButterflyGyro using a single-crystal silicon technology and comes with an electronically calibrated axis alignment. The IMU requires a supply voltage of 4.5-5.5 V and has a power consumption of 1.8-2.5 W. It has a mass of 57 g and measures 44.8 x 38.6 x 21.5 mm. The STIM318 is ideal for satellites, launch vehicles, missile systems, remote weapon systems, DIRCM, and target acquisition systems.
