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Spectroigenoscopy of time series of the electric field of the infra-low-frequency range at double frequencies of revolution of binary star systems

Keywords:

V.V. Isakevich – Ph. D. (Eng.), Director for Innovative Development LLC «Sobstvenny vector» E-mail: eigenoscope@yandex.ru D.V. Isakevich – Director, LLC «Sobstvenny vector» E-mail: eigenoscope@yandex.ru L.V. Grunskaya – Dr. Sc. (Eng.), Associate Professor, Professor, Vladimir State University named after A.&N. Stoletovs E-mail: grunsk@vlsu.ru


Spectroeigenoscopy is based on the scheme of signal eigenvector and component analyser which use orthonormal eigenvector basis of covariance matrix. At the first stage of spectroeigenoscopy the time series is decomposed to noncorrelated components, then the components spectrally localized near the frequencies of interest are selected and statistical analysis of the selected components is performed in order to make a solution. The authors have analysed long-term records of the electric field vertical component at three Roshydromet stations (Voyeikovo, Verkhneye Dubrovo, Dusheti) and at the VlSU testing ground. There has been discovered the physical effect of presence of noncorre-lated components spectrally localized at the double frequencies of binary stars. The analysis was carried out for the binary stars having rotation periods more than 12 hours. For all the analysed binary stars the spectral estimation at the double frequency of the system has not more than −4 dB of energy brought by the corresponding (localized at this double frequency) noncorrelated component. The selectiveness of spectroeigenoscopy is caused by decomposition of the time series to the components which are defined by correlation properties of the series. The Bernoulli test scheme is used in order to make a solution on physical effect presence. The false alarm probability is shown to be extremely low while the classic spectral analysis methods do not discover the effect of interest.
References:

 

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