Effect of redundancy of element placement on DOA estimation with circular array

The high-resolution DOA estimation with an array antenna is utilized as an important technique for source localization in mobile communication or radio monitoring. This paper deals with MUSIC with circular array which can perform DOA estimation in all directions of azimuth. Uniform circular array (UCA) and minimum redundancy circular array (MRCA) are compared in DOA estimation and the effectiveness of MRCA is shown through computer simulation.