Using of correlation methods for processing of optical fiber Bragg grating sensors data and analysis of possible errors of these methods

The questions of using of correlation methods for increasing accuracy of measurements, executed with using of optical fiber Bragg grating sensors, are considered. By numerical modeling possible errors of correlation method is investigated and is shown, that using of Gauss approximation for peaks of reference Bragg spectrum allows to reduce these errors. The steadiness of correlation method to noise in input signal is investigated also. The comparison of numerical modeling predictions with experimental results is produced.