Method for signal detection of integrated optic gyroscope based on digital signal processing

Zhen Zhang; Xin Yin; Cheng Cheng

doi:10.1117/12.831009

21 May 2009 Method for signal detection of integrated optic gyroscope based on digital signal processing

Zhen Zhang, Xin Yin, Cheng Cheng

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72822X (2009) https://doi.org/10.1117/12.831009
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

The integrated optic gyroscope (IOG) has many advantages, such as small volume, light quality, low propagation loss, vibration-resisting and high stability, which is the development direction of high-precision and miniaturized optic gyroscope. The result of signal detection influences the precision and detecting sensitivity of IOG directly. Noise is the crucial factor to limit detecting precision. In the practical application, the output signal of IOG is mixed up with many sorts of noise, which interferes the detection of useful message and lead drift and instability of output signal of gyroscope. So increasing the precision and detecting sensitivity directly of IOG needs not only suppressing the noise origin, but also detecting the signal in noise with effective method. According to the characteristics of output signal from detector, a signal processing method for IOG is introduced, which detects signal from noise by taking advantage of digital filter and cross-correlation, based on a digital system comprised of a high-performance digital signal processor. The result of experiments shows that percent error is less than 3 percentage or large under condition of 10 dB signal-tonoise ratio. The information of rotation in IOG is extracted effectively from the output signal mixed up with noise by this method.

Citation Download Citation

Zhen Zhang, Xin Yin, and Cheng Cheng "Method for signal detection of integrated optic gyroscope based on digital signal processing", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72822X (21 May 2009); https://doi.org/10.1117/12.831009

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