Subarray incoherency compensation for DOA estimation of 8-element antenna array

MUSIC algorithm is one of the most widely known and used signal source estimation techniques. A presented paper deal with an experiment of direction of arrival (DOA) estimation of signal sources using two subarrays without coherency or with rough synchronization. The performance of DOA estimation improves with increasing the number of elements of antenna array. In this case, a practical measurement is performed using 8-element antenna array (each antenna subarray includes 4-element), received signals between two antenna subarrays are roughly synchronized. For estimation DOA signals we proposed an algorithm to estimate DOA signal using MUSIC algorithm with higher accuracy. Results show that the algorithm could estimate DOA signals correctly in the case of two incoming coherent signals.