Vers une Carte d'Identité Spectrale

Nadine Martin (1) , Corinne Mailhes (2, 3) , Kheira Sahli (1) , Gérard Lejeune (1)

1 LIS - Laboratoire des images et des signaux
2 IRIT-SC - Signal et Communications
3 Toulouse INP - Institut National Polytechnique (Toulouse)

This paper studies a new spectral analysis strategy for detecting, characterizing and classifying the different “spectral structures” of an unknown stationary process. A “spectral structure” is defined as a sinusoidal wave, a narrow band signal or a noise peak. The spectral analysis strategy is based on the use of several successive and complementary spectral analyses. Then, the proposed methodology provides a way to calculate a “spectral identity card” of each spectral structure, similarly to a real I.D. card. This I.D. card including all information related to this structure results from the fusion of intermediate cards, which are obtained from different spectral analysis algorithms. The I.D. card permits the classification of the detected spectral structure into one of the following four classes: Pure Frequency, Narrow Band, Alarm and Reject.

Mots clés: Spectral analysis; power spectral density; spectral window; detection; interpretation; fusion; decision; classification; noise spectrum; stationary signals; pure frequencies; colored noise; acoustic and vibratory signals

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Nadine Martin, Corinne Mailhes, Kheira Sahli, Gérard Lejeune. Vers une Carte d'Identité Spectrale. 20ème colloque GRETSI sur le Traitement du Signal et des Images, GRETSI 2005, Sep 2005, Louvain-la-Neuve, Belgique. pp. 1092-1095. ⟨hal-00263803⟩