Hi,
I have extensive experience in Array Signal Processing. I have written matlab code for Capon, MUSIC Sprit etc. algorithms in Direction finding systems having standard antenna array geometries like UCA (Uniform Circular Array), ULA (Uniform Linear Array), etc.
Your project, which involves a rectangular array, can also be dealt with in a few days.
Please feel free to contact me if you have any questions.
Bests,
ArmanEngineer