Analysis of a cross interferometer for airborne applications

The performance of the horizontal interferometer is compared with that of the cross interferometer. The cross interferometer consists of a horizontal array of elements along the y-axis and a vertical array of elements along the z-axis. The objectives of the analysis are to demonstrate how well this dual linear antenna array overcomes the deficiencies of the horizontal interferometer. From a systems viewpoint, it is clear that adding a vertical interferometer provides valuable elevation direction information to the direction-finding system. The performance measures of interest used in this comparative analysis were angular accuracy, probability of ambiguity and elevation coverage.<>