arXiv subjects

Valery Karasik

Publications and source records attributed to Valery Karasik.

2 recordsLinked to original sources

arXiv2016

Gaussian mixture model for event recognition in optical time-domain reflectometry based sensing systems

We propose a novel approach to the recognition of particular classes of non-conventional events in signals from phase-sensitive optical time-domain-reflectometry-based sensors. Our algorithmic solution has two main features: filtering aimed at the de-nosing of signals and a Gaussian mixture model to cluster them. We test the proposed algorithm using experimentally measured signals. The results show that two classes of events can be distinguished with the best-case recognition probability close to 0.9 at sufficient numbers of training samples.

physics.optics↗

arXiv2015

Towards events recognition in a distributed fiber-optic sensor system: Kolmogorov-Zurbenko filtering

The paper is about de-noising procedures aimed on events recognition in signals from a distributed fiber-optic vibration sensor system based on the phase-sensitive optical time-domain reflectometry. We report experimental results on recognition of several classes of events in a seismic background. A de-noising procedure uses the framework of the time-series analysis and Kolmogorov-Zurbenko filtering. We demonstrate that this approach allows revealing signatures of several classes of events.

physics.optics↗