Inertial Measurement Unit with Distributed Packaging

Missile systems requiring lock-on after launch capability require Inertial Measurement Units (IMU) that exhibit low drift to support navigation functions and high output data rates to support target tracking. Missile warheads impose size constraints and environmental performance requirements on the IMU, which are incompatible with certain gyroscope technologies. The IMU’s gyro is a primary driver of its size, therefore development of very small, low drift, high update rate gyros are crucial to support next generation missile systems. To address this need, SA Photonics is pleased to propose the Phase II development of its D-100 distributed architecture navigation grade / jitter-control IMU. The distributed FOG divides the traditional IMU into 2 separate modules, partitioning the inertial sensors into a revolutionary small “sensor head” that can be located in the often-confined forward areas of a missile. The second module containing the control, processing and interface electronics, can be located in less confined spaces aft of the warhead.