Patent ID: 7948438

Claim:
A method of determining the angle of arrival of a target signal received by an array of antenna elements, comprising the steps of: (a) with a receiver, obtaining observations of a received target signal from an array of antenna elements; and (b) with a computer, processing the obtained observations of the target signal with estimates of a target signal for different angles of arrival of a target signal received by the array of antenna elements to determine that the angle of arrival of the target signal is an angle of arrival at which dissimilarity between the observations of target signal and the estimates of the target signal for the different angles of arrival is minimized; wherein step (b) comprises the step of: (c) determining the angle of arrival φ by using the equation: φ=argmin φ ∥y−δA′x∥ 2 wherein y is an observation of the target signal obtained from the individual elements of an array of antenna elements, and δA′x is an estimate of a target signal received by a set of antenna elements for a particular angle of arrival.