Comparison of hemispherical resonator gyro and optical gyros

The basic design of the small hemispherical resonator gyro inertial and tactical grade sensors and associated electronics is described. To reduce the cost of the electronics and maintain part per million accuracy, emphasis has been placed on digital control and processing techniques. A comparison of the ring laser gyro, fiber optic gyro, and hemispherical resonator gyro sensors shows that the latter offer lower cost, smaller size, and higher reliability than their optical counterparts.<>