Abstract:

As array errors affect the precision of direction of arrival (DOA) estimation, a multiple signal classification (MUSIC) algorithm for noncircular signals about real values for noncircular signals based on instrumental sensors is proposed, which combines the basic principle of the instrumental sensor method (ISM) and the characters of noncircular signals. This new algorithm that uses the real value of the non-circular signal output arrays extending mode not only improves utilization of the array output signals, but also decreases the calculation amount. A mathematical expressions about obtaining the signal DOA estimation are derived and a simulation is made. And the results of the algorithm simulation verify the superiority of the algorithm.