Two-dimensional DOA estimation with reduced-dimensional#br# MUSIC algorithm using the modulus constraint
CAI Jing-jing， QIN Guo-dong， LI Peng， ZHAO Guo-qing
Systems Engineering and Electronics . 2014, (9): 1681 -1686 .  DOI: 10.3969/j.issn.1001-506X.2014.09.02