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:
Mar. 28, 2006
Filed:
Sep. 05, 2002
Anne Ferreol, Colombes, FR;
François Delaveau, Le Plessis S/Marne, FR;
Anne Ferreol, Colombes, FR;
François Delaveau, Le Plessis S/Marne, FR;
Thales, Paris, FR;
Abstract
A method for the detection of Msources common to several observations(t) and(t) within a single array of sensors, the observations having different lengths Nand N, comprises at least the following steps: defining a law of likelihood V([M=M]/M) substantially equal to the chi-2 law with 2(N−M)(N−M) degrees of freedom with N≦N, dim{(t)}=N×1 and dim{(t)}=N×1; determining a detection threshold αin order to obtain a low probability of false alarms and a number of degrees of freedom that takes account of the lengths Nand Nand of the number of sources M; determining the presence and/or the number of the sources Min applying the law of likelihood and the threshold α. The method and device can be applied to the determining of the presence and/or the number of sources common to at least two observations having different lengths in a GSM type radiocommunications system.