Research on Anti-Vibration Scheme of FOG SINS

To reduce the impact on characteristic of FOG(fiber optic gyro) SINS(strapdown inertial navigation system) from vibration, a new anti-vibration scheme based on improvement of mechanical structure, craft of optics and signal processing is proposed. Using finite element theory, the framework’s resonance frequency of FOG is studied and enhanced to adapt the surrounding; Vibration modulation mechanism of FOG is discussed, and the producing art is summarized; The output of FOG is filtered by wavelet signal processing. The vibrating noises are eliminated and the accuracy of alignment is enhanced.