Multiparametric direction finding method comprising the separation of the incidence and nuisance parameters

US7952521B2 · kind B2 · utility

Assignee

• THALES · FR

Inventors

• Anne Ferreol · Colombes, FR
• Pascal Larzabal · L'Haÿ-les-Roses, FR

Key dates

• Filing date: Jun 21, 2005
• Grant date: May 31, 2011
• Expiry date: May 20, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q3/2605
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Method of multi-parameter direction finding of several sources in an array of N sensors, comprising at least the following steps: a) choosing a parameter to be determined, or parameter of interest, b) expressing the direction vector in the form of a linear relation between the parameter of interest chosen and the secondary parameters b0(θ, Φ0)=U0(θ) φ0(Φ0), c) applying a MUSIC-type direction finding step by factorizing the criterion serving for the determination of the angles of incidence so as to determine at least the incidence parameter, d) on the basis of the incidence value, determining the vector representative of the secondary parameters and expressing this vector in the form of a linear relation between a chosen parameter to be determined and the other secondary parameters, e) applying a MUSIC-type direction finding step by factorizing the criterion serving in the determination of the chosen parameter, f) repeating steps d) to e) so as to determine the majority or the whole set of secondary parameters.