Patent ID: 7414582

Claim:
A method of determining an angle of arrival for an emitted signal having any polarization, the method comprising: acquiring measurements at least partially corresponding to the emitted signal and generated utilizing a blind signal extraction algorithm, wherein the measurements include a weight vector and include calibration measurements comprising a matrix having vertical and horizontal array calibration vectors, the matrix being at least partially represented by the equation: A (θ,φ)=[ {right arrow over (a)} v (θ,φ) {right arrow over (a)} h (θ,φ)] (n×2) wherein {right arrow over (a)} v is the vertical array calibration vector, {right arrow over (a)} h is the horizontal array calibration vector, θ is an azimuth, and φ is a depression angle; forming an all-polarization cost function utilizing the acquired measurements, wherein the all-polarization cost function is at least partially represented by the equation: ρ ap_mldf ⁡ ( θ , ϕ ) = det ⁡ ( [ A * ( θ , ϕ ) ⁢ Rxx - 1 ⁢ A ⁡ ( θ , ϕ ) ] 2 × 2 ) ( w -> * A ⁡ ( θ , ϕ ) ⁢ A * ( θ , ϕ ) ⁢ w -> ) ( 1 × 1 ) wherein A is the matrix, {right arrow over (w)} is the weight vector, Rxx is a time-average data auto correlation matrix, θ is an azimuth, and φ is a depression angle; and determining the angle of arrival for the emitted signal utilizing the formed all-polarization cost function.