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Proceedings Paper

Multimode fiber optic rotation sensor with low-cost digital signal processing
Author(s): Dean R. Johnson; Ronald J. Fredricks; S. C. Vuong; David T. Dembinski; Sehbaz H. Sabri
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Paper Abstract

Digital signal processing schemes which provide amplitude and phase tracking of PZT modulation harmonics in a fiber optic rotation rate sensor are presented. The estimation algorithm implementations are designed to be extremely low cost, yet sufficiently accurate and responsive to be compatible with a multimode fiber optic rotation rate sensor (FORS). A digital detector board, featuring a digital signal processor and simple 13-bit data conversion circuitry is utilized, along with an electronic FORS simulator and an external PC to provide the data acquisition and digital signal processing for the detection schemes. It is also demonstrated how false rate signals induced by PZT amplitude modulation instabilities in the multimode FORS may be eliminated in the signal processing.

Paper Details

Date Published: 1 February 1991
PDF: 15 pages
Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24737
Show Author Affiliations
Dean R. Johnson, Research & Technology Institute of West Michigan and Western (United States)
Ronald J. Fredricks, Research & Technology Institute of West Michigan and Western (United States)
S. C. Vuong, Research & Technology Institute of West Michigan and Western (United States)
David T. Dembinski, Research & Technology Institute of West Michigan and Western (United States)
Sehbaz H. Sabri, Research & Technology Institute of West Michigan and Western (United States)


Published in SPIE Proceedings Vol. 1367:
Fiber Optic and Laser Sensors VIII
Ramon P. DePaula; Eric Udd, Editor(s)

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