In this paper, a new class of focussing matrices is proposed for use in the Coherent Signal-Subspace Method (CSM) . When the directions-of-arrival of wide band sources fall within more than one group of one beamwidth each, this new class leads to performance substantially better than those suggested in  and  for directions-of-arrival estimation. New insight into the structures of various focussing matrices and their effect on the performance of CSM is presented. Comparative performance of CSM based on several classes of these matrices is provided based on simulations as well as relative sufficiency analyses.
|Original language||English (US)|
|Number of pages||10|
|Journal||IEEE Transactions on Acoustics, Speech, and Signal Processing|
|State||Published - Aug 1988|
Bibliographical noteFunding Information:
Manuscript received August 24, 1987; revised February 29, 1988. This work was supported in part by the National Science Foundation under Grant ECS-8414316 and by the SDIOIIST, managed by the Office of Naval Research, under Contract N00014-86-K-0410. H. Hung is with the Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 5001 1. M. Kaveh is with the Department of Electrical Engineering, University of Minnesota, Minneapolis, MN 55455. IEEE Log Number 8821848.