Patent Document ID: 20080252526
Application ID: 11571265
Patent Status: 0

Claim One:
1. A method of multiparameter direction finding of several sources in an array of N sensors, receiving a linear mixture of M sources with direction of arrival or DOA (θ m with 1≦m≦M), the observation vector corresponding to the signals received on the sensors being expressed as a linear combination of the responses to the array of sensors of each of the emitters with the complex envelope of the signal of the m th emitter, comprising at least the following steps: a) choosing a parameter to be determined, or parameter of interest, b) expressing the direction vector (or response of the array of sensors to a source of incidence θ and of nuisance vector Φ 0 ) in the form of a linear relation between the parameter of interest chosen and the secondary parameters b 0 (θ, Φ 0 )=U 0 (θ) φ 0 (Φ 0 ), 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, the criterion used in the MUSIC procedure consisting of the ratio of the determinants of the matrices Q 1 (θ)=U(θ) H Π b U(θ) and Q 2 (θ)=U(θ) H U(θ), 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, and f) repeating steps d) to e) so as to determine the majority or the whole set of secondary parameters.