A robust fault detection algorithm for the improvement of OTDR sensitivity

Author

Beghi, Alessandro ; Bertocco, Matteo

Author_Institution

Dipartimento di Elettronica e Inf., Padova Univ., Italy

Volume

2

fYear

1996

fDate

1996

Firstpage

818

Abstract

In the paper, an algorithm is presented for the detection of jump discontinuities in exponential signals buried in high level additive noise. It is employed as a post-processor in an optical time domain reflectometer (OTDR) to locate the position of discontinuities along the fiber. The proposed technique is based on a generalized likelihood ratio test applied to the innovation sequence resulting from Kalman filtering. A rigorous and thorough statistical analysis of the algorithm is reported, showing the achievable resolution together with the probability of error in the detection of faults

Keywords

Kalman filters; error statistics; fault diagnosis; optical fibre communication; optical fibre testing; optical time-domain reflectometry; probability; random noise; state-space methods; statistical analysis; Kalman filtering; OTDR sensitivity; detection of faults; discontinuities; exponential signals; generalized likelihood ratio test; high level additive noise; jump discontinuities; optical time domain reflectometer; post-processor; probability of error; resolution; robust fault detection algorithm; statistical analysis; Additive noise; Fault detection; Filtering; Kalman filters; Noise robustness; Optical fiber filters; Optical fiber testing; Optical filters; Optical noise; Technological innovation;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE

Conference_Location

Brussels

Print_ISBN

0-7803-3312-8

Type

conf

DOI

10.1109/IMTC.1996.507282

Filename

507282