Title :
Tracking of signal subspace projectors
Author :
Utschick, Wolfgang
Author_Institution :
Inst. for Circuit Theor. & Signal Process., Munich Univ. of Technol., Germany
fDate :
4/1/2002 12:00:00 AM
Abstract :
A new subspace tracking approach that directly operates on the projection matrix onto the signal subspace instead of tracking its unitary eigenbasis is proposed. Therefore, the difficulties arising from introducing a calculus on the manifold of projection matrices are overcome by a proper parameterization of the projectors. Simulation results are presented from the field of angular frequency retrieval in array signal processing
Keywords :
array signal processing; direction-of-arrival estimation; eigenvalues and eigenfunctions; matrix algebra; tracking; calculus; parameterization; projection matrix; signal subspace projectors; subspace tracking approach; unitary eigenbasis; Array signal processing; Calculus; Direction of arrival estimation; Eigenvalues and eigenfunctions; Frequency; Helium; Matrix decomposition; Signal processing; Signal processing algorithms; Singular value decomposition;
Journal_Title :
Signal Processing, IEEE Transactions on
