I'm reading a paper from Lund University. They show the measurement and compare the accuracy of 3 types of arrays.
The interest and question I got are two types, 4x4 URA and 12 elements square-shaped. The 12 elements square-shaped have similar antennas alignment to 4x4 URA but have no middle antennas.
4x4 URA is easy to find angles by using a built-in function in MATLAB (bleAngleEstimate). This function can calculate only URA type, but not for 12 elements square-shaped.
So I want to know the difference of algorithm between these two antenna types from correlation matrix estimation, steering vector setup to MUSIC estimate.