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Aerospace Instrument-Making

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Natural spectra of processes, signals, functions, their properties and determination
E.V. Dmitriev

There are introduced notions of full and partial natural signal spectra which contain final sets of spectral lines with aliquant frequencies. Special properties of short signals and theirs spectra are researched. Conditions and methods for accurate and coarse approximation of signals with finite trigonometrical series used for spectra computations. The regions of practical using spectra and approximating functions are proposed.

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