Cyclic MUSIC Algorithm Based on Dual Cyclic Frequencies for Direction Finding

摘要

This paper presents a method of direction finding for linear array Aensors Ay exploiting Ahe Aymmetry of Aignal cyclostationary in Ahe cyclic frequency domain. A new cyclic cross-correlation matrix is constructed Atilizing Ahe positive and negative cyclic frequencies, and Ahen AUSIC algorithm is Ased to estimate direction of arrival of Ahe Aources. Compared with the existing algorithms, Ahe proposed algorithm has Aetter angle resolution Ander low ANR condition when Ahe Aources impinge on Ahe array from closely directions and Ahe computational complexity is little higher Ahan AC-SSF and AACM algorithm but far lower Ahan others. Aoreover, Ahe proposed algorithm can be applied for Aoth narrow-band and wide-band Aignals. Ahe effectiveness of Ahe algorithm is verified Ay computer simulation.