Procedure di identificazione e filtraggio per la dinamica di un giroscopio laser

Ring laser \gyros" are nowadays standard sensors in high sensitivity inertial guidance, angle metrology, and more generally in estimating rotation rates. They combine unique qualities of stability with reference to the measure operation, high sensitivity, wide frequency detection range, absence of moving mechanical part, lack of sensitivity to linear accelerations, reliability and duration. As discovered by G. Sagnac (1913), using pure classical formalism [1], interference pattern of two light beams following the same closed path in opposite directions is proportional to the rotation rate of the closed path. Sensitivity to rotation is the fundamental feature of the Ring Laser Gyroscopes (RLG) and, together with the above mentioned properties, make this instrument of great interest in military and civil applications [2]. Many improvements in the RLG design and implementation have been achieved in the last decades [2]. Recent manufacturing progresses together with new statistical tools for data treatment allow one to further investigate extremely various eld of application, such as very accurate motion sensing, servo navigation control, Geophysics, Geodesy and General Relativity