Patent ID: 7705781

Claim:
A computer-implemented method for providing visualization of a presence of an ambiguity in an angle of arrival of a signal incident on an array, comprising: receiving data of a configuration of the array, the array including at least one pair of elements, the data including a number of pairs of elements in the array and a distance d between elements in each pair; determining a pair-wise element phase difference ΔΦ mn (θ) in phase of the signal as received by a pair of elements (m,n) in the array; receiving data of a first angle of arrival of the signal θ 1 and data of a second angle of arrival of the signal θ 2 and determining a difference Δθ=θ 2 −θ 1 ; determining a distance √{square root over ( ΔΨ 2 (θ 1 ,θ 2 ) )} between the pair-wise element phase difference ΔΦ mn (θ) at θ 1 and the pair-wise element phase difference ΔΦ mn (θ) at θ 2 for all pairs of elements (m,n) in the array; pairing each value of √{square root over ( ΔΨ 2 (θ 1 ,θ 2 ) )} with each value of Δθ to create a plurality of paired values of √{square root over ( ΔΨ 2 (θ 1 ,θ 2 ) )} and Δθ; transforming data of the paired values into data of a histogram; and transforming the data of the histogram into a visual display indicative of the presence of an ambiguity in the angle of arrival of the signal.