Time-frequency MUSIC

A new method for the estimation of the signal subspace and noise subspace b ased on time-frequency signal representations is introduced, The proposed a pproach consists of the joint block-diagonalization (JBD) of a set of spati al time-frequency distribution matrices, Once the signal and noise subspace s are estimated, any subspace based approach, including the multiple signal classification (MUSIC) algorithm, can be applied for direction of arrival (DOA) estimation. Performance of the proposed time-frequency MUSIC (TF-MUSI C) for an impinging chirp signal using three different kernels is numerical ly evaluated.