1D or 2D goniometry method of diffuse sources

US7999739B2 · kind B2 · utility

Assignee

• THALES · FR

Inventors

• Anne Ferreol · Colombes, FR
• Blandine Vibert · Paris, FR
• Philippe Morgand · Athis-Mons, FR

Key dates

• Filing date: Feb 1, 2005
• Grant date: Aug 16, 2011
• Expiry date: Feb 5, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S3/74
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A goniometry method for one or several diffuse (or distributed) sources is disclosed. The sources or sources having one or more give directions and a diffusion cone. The sources are received by an array of several sensors. The method breaks down the diffusion cone into a finite number L of diffusers. A diffuser has the parameters (θmp, δθmpi, Δmp, δΔmpi), associated with it. Directing vectors a(θmp+δθmpi, Δmp+δΔmpi) associated with the L diffusers are combined to obtain a vector (D(θ, Δ, δθ, δΔ) α or U(θ, Δ) β(δθ, δΔ, α)) dependent on at least one of the incidence and deflection parameters (θ, Δ, δθ, δΔ) and on the combination vector α. A MUSIC-type criterion or other goniometry algorithm is applied to the vectors D(θ, Δ, δθ, δΔ) α or U(θ, Δ) β(δθ, δΔ, α) obtained in order to determine at least one of the incidence parameters θmp, Δmp, δθmp, δΔmp of the associated diffusion cone.