Cuboid array: A novel 3-D array configuration for high resolution 2-D DOA estimation

This paper presents a novel 3-D cuboid array configuration which enables high resolution 2-D DOA estimation. The authors have already proposed a 3-D array configuration which improves the elevation estimation accuracy, but the array configuration cannot estimate DOAs of correlated waves. The proposed cuboid array configuration has almost the same DOA estimation performance as that of the conventional 3-D array configuration for uncorrelated waves, and can estimate DOAs of coherent waves where the conventional configuration is unable to do so. Performance of the proposed 3-D cuboid array configuration is evaluated through a computer simulation.