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This paper explores a new method for detecting cyber-attacks on a controller. Specifically, the proposed detector is based on invariant sets in order to determine whether an attacker has hijacked the controller and perpetrated a cyber-attack. One particularity of this detection method is that few information about the controller is required. Thus, the detector becomes useful for a large range of control...
We present the use of swept wavelength interferometry for distributed fiber-optic temperature measurements in a nuclear reactor. The sensors consisted of 2-m segments of commercially available, single mode optical fibers. The interrogation technique is based on measuring the spectral shift of the intrinsic Rayleigh backscatter signal along the optical fiber and converting the spectral shift to temperature.
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