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
A robust fault detection algorithm for the improvement of OTDR sensitivity
BEGHI, ALESSANDRO;BERTOCCO, MATTEO
1996
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 faultsFile in questo prodotto:
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