Digital Signal Processing Approach of Dithered RLG Based on IFIR Digital Filter

Kui Zhang; Gong Liu Yang; Wei Zhen Zheng; Ren Dong Ma

doi:10.4028/www.scientific.net/AMR.989-994.4195

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 989-994Digital Signal Processing Approach of Dithered RLG...

Digital Signal Processing Approach of Dithered RLG Based on IFIR Digital Filter

Abstract:

An interpolated finite impulse response (IFIR) digital filter approach was purposed to improve the demerits of traditional finite impulse response (FIR) digital filter in the case of noise attenuation for dithered Ring Laser Gyroscope (RLG). Concentrated on the time delay and computation complexity, a comparison of FIR and IIR digital filter was illustrated. By optimizing the stretch factor L, an IFIR digital filter was designed to reach the requirements of a typical RLG. The static experiment results show that the impulse number is decreased from 250 to below 0.15, attenuation of the dither noise is nearly 100 dB and group delay remains the same level by 11.25ms.

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Periodical:

Advanced Materials Research (Volumes 989-994)

Pages:

4195-4199

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.989-994.4195

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Online since:

July 2014

Authors:

Kui Zhang*, Gong Liu Yang, Wei Zhen Zheng, Ren Dong Ma

Keywords:

Digital Signal Processing, IFIR, Interpolated Finite Impulse Response, RLG

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* - Corresponding Author

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