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UDC 621.396

SPECTRAL ANALYSIS OF MULTI-FREQUENCY REFLECTIONS FROM ROTATING SPACE OBJECT BY METHOD OF DIFFERENTIAL ELECTROPHOTOMETRY

V. G. Andreyev, PhD (technical sciences), professor, Ryazan State Radioengineering University, Ryazan, This email address is being protected from spambots. You need JavaScript enabled to view it.
A. V. Fedosov, undergraduate, Ryazan State Radioengineering University, Ryazan, This email address is being protected from spambots. You need JavaScript enabled to view it.
D. V. Avramenko, post-graduate student, Ryazan State Radioengineering University, Ryazan, This email address is being protected from spambots. You need JavaScript enabled to view it.
The problem of spectral analysis of reflections from a rotating object in the process of its simultaneous observations in different ranges of electromagnetic wavelengths is considered. A method of differential photometry is offered to be used. A redefined vector autoregressive model was used for spectral analysis of a difference signal. It is shown that the usage of this model gives the chance to reduce model order from 1,2 to 1,8 times in comparison with usual vector autoregressive approach. Also it makes possible to measure the frequency of space object rotation by short (2…3 turns of the object) experimental sample of observations. 

Key words: vector linear autoregression, differential photometry, spectrum, spectral parameter’s estimation, vector modeling of temporary ranks, redefined system of Yule – Walker equations, quasi inverse matrix, minimization of average squared error.

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