Method and device to determine the frequency spectrum of a signa

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364498, 364484, 36457102, 364578, 342192, 324 7619, G06F 1900, G06F 1710

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057294658

ABSTRACT:
The present invention pertains to the analysis of the frequency spectrum of a signal by a high-resolution method that is more precise than the Fourier transform when all that is available is a small number of samples of the signal. It pertains more particularly to a method for the autoregressive modelling frequency spectral analysis of a signal, known as Burg's maximum entropy method, and consists of a regularization of this method by means of a criterion similar to that already known to have been used in order to regularize the method of autoregressive spectral analysis known as the least error squares method, while at the same time keeping the advantages of Burg's maximum entropy method which are that it can be used in real time with a lattice type computation structure, that it can be extended to multisegment configurations and that it is robust with respect to computation noise, errors of quantization and rounding-off operations.

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