The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2010
Filed:
Mar. 19, 2004
Matthias Fink, Meudon, FR;
Julien DE LA Gorgue DE Rosny, Paris, FR;
Claire Julia-prada, Paris, FR;
Thomas Folegot, Brest, FR;
Matthias Fink, Meudon, FR;
Julien De la Gorgue de Rosny, Paris, FR;
Claire Julia-Prada, Paris, FR;
Thomas Folegot, Brest, FR;
Centre National de la Recherche Scientifique, Paris Cedex, FR;
Universite Paris 7 - Denis Diderot, Paris Cedex, FR;
Abstract
The invention relates to a method of determining impulse responses from a medium () in relation to the transmission of waves between different points (T-TN). The inventive method consists in: transmitting waves in the medium by generating, at each point j, signals ei(t) each comprising n elementary signals with respective frequencies which are spaced apart in pairs by an interval δf and which are different from the frequencies of the elementary signals corresponding to the other points; receiving signals rj(t) at points j after the transmission of the aforementioned waves in the medium; and calculating each impulse response hij(t) from a correlation signal between signal ei(t) transmitted at point i and signal rj(t) received at point j.