Method and system for processing a multi-channel measurement...

Details Method and system for processing a multi-channel measurement... Method and system for processing a multi-channel measurement...

G - Physics

01

R

G01R 33/02 (2006.01)

Patent

CA 2518674

The invention relates to a method and device by means of which an irrotational, sourceless vector field can be expressed by a number of physically reasonable basis vectors as small as possible in such a manner that the measured signals can be unambiguously divided into signals of the irrotational, sourceless vector field that are caused by an interesting object or external interferences, as well as into a signal caused by the nonideality of the measuring device, which signal is not included in the model of the signal space describing an irrotational, sourceless vector field. The invention is based on the combining of two very fundamental mathematical regularities and applying in the processing of signal vectors of a multi- channel measuring device that measures an irrotational, sourceless vector field: on the Maxell~s equations of an irrotational, sourceless vector field, as well as on the convergence characteristics of series developments.

L'invention porte sur un procédé et un dispositif permettant d'exprimer un champ vectoriel sans source non rotatif au moyen d'un certain nombre de vecteurs de base physiquement raisonnables les plus petits possible de manière que les signaux mesurés puissent être divisés sans ambiguïté en signaux du champ de vecteur sans source non rotatif qui sont provoqués par un objet intéressant ou des interférences externes, ainsi qu'en un signal provoqué par la non idéalité du dispositif de mesure, ce signal n'étant pas inclus dans le modèle de l'espace de signaux qui décrit un champ de vecteur sans source et non rotatif. Cette invention est fondée sur la combinaison de deux constances mathématiques fondamentales qui s'appliquent dans le traitement de vecteurs de signaux d'un dispositif de mesure multi-canaux qui mesure un champ de vecteur sans source non rotatif : sur les équations de Maxwell d'un champ de vecteur sans source et non rotatif, ainsi que sur la convergence de caractéristiques de développements en séries.

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