Direction Finding Algorithms for Noncircular Signals Based on Even Order Cumulants

LIU Jian, YU Hong-qi, HUANG Zhi-tao, ZHOU Yi-yu

ACTA ELECTRONICA SINICA ›› 2007, Vol. 35 ›› Issue (12) : 2371-2375.

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ACTA ELECTRONICA SINICA ›› 2007, Vol. 35 ›› Issue (12) : 2371-2375.

Direction Finding Algorithms for Noncircular Signals Based on Even Order Cumulants

  • LIU Jian1,2, YU Hong-qi1, HUANG Zhi-tao1, ZHOU Yi-yu1
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Abstract

The NC-2q-MUSIC(Multiple Signal Classification)algorithm,which is an extension of the 2q-MUSIC algorithm to noncircular(NC)applications,is proposed.The performance of NC-2q-MUSIC algorithm for noncircular signals is better than 2q-MUSIC algorithm due to the utilization of noncircular information of signals.The resolution and robustness to modeling errors of NC-2q-MUSIC algorithm become better with the increase of q.The computational complexity of the NC-2q-MUSIC algorithm is analyzed and the NC-2q-MUSIC algorithm for uniform linear array(ULA),needs much less computation is also proposed.Simulation results show the better performance of NC-2q-MUSIC algorithm over 2q-MUSIC and validate other conclusions about NC-2q-MUSIC.

Key words

array signal processing / direction finding / aperture extension / cumulants / MUSIC(Multiple Signal Classification)

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LIU Jian, YU Hong-qi, HUANG Zhi-tao, ZHOU Yi-yu. Direction Finding Algorithms for Noncircular Signals Based on Even Order Cumulants[J]. Acta Electronica Sinica, 2007, 35(12): 2371-2375.
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