Title :
The constrained MUSIC problem
Author :
DeGroat, Ronald D. ; Dowling, Eric M. ; Linebarger, Darel A.
Author_Institution :
Erik Jonsson Sch. of Eng. & Comput. Sci., Texas Univ., Dallas, TX, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
The MUSIC-based direction-of-arrival (DOA) method is generalized to include constraints involving known signal information. Projection operators are used to constrain the noise subspace to be orthogonal to a set of prespecified direction vectors. By incorporating known source directions, the estimation of unknown source directions can be significantly improved. Simulations are performed over a wide range of scenarios to demonstrate the usefulness of the approach
Keywords :
signal processing; DOA; constrained MUSIC problem; direction vectors; direction-of-arrival; noise subspace; projection operators; signal information; signal processing; simulations; source directions; Additive noise; Direction of arrival estimation; Frequency estimation; Instruments; Multiple signal classification; Sensor arrays; Signal processing; Signal resolution; Subspace constraints; Vectors;
Journal_Title :
Signal Processing, IEEE Transactions on
