PROJECT TITLE :

Remarks on the Spatial Smoothing Step in Coarray MUSIC

ABSTRACT:

Sparse arrays such as nested and coprime arrays use a method called spatial smoothing so as to successfully perform MUSIC within the distinction-coarray domain. In this paper it's shown that the spatial smoothing step is not necessary in the way that the impact achieved by that step will be obtained more directly. In particular, with $widetilde bf R_ss$ denoting the spatial smoothed matrix with finite snapshots, it is shown here that the noise eigenspace of this matrix can be directly obtained from another matrix $widetilde bf R$ which is a lot of easier to compute from data.