Decomposition of the focusing transformation in coherent signal-subspace DOA estimation

Author

Lee, D. ; McClellan, J.H.

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1990

fDate

1-3 May 1990

Firstpage

238

Abstract

A decomposition of the focusing transformation matrix needed in the coherent signal-subspace method of H. Wang and M. Kaveh (IEEE Trans. ASSP, vol.ASSP-33, no.4, p.823-31, Aug. 1985) is presented. The decomposition yields a structure for implementing the space-time domain filter needed to preprocess the array data prior to the direction of arrival (DOA) estimation step. The resulting structure uses blocking matrices and steering matrices as modules to give a simples preprocessing filter. This structure is compared to a previously published multichannel filter design

Keywords

estimation theory; filtering and prediction theory; matrix algebra; signal detection; blocking matrices; coherent signal-subspace DOA estimation; decomposition; direction of arrival; focusing transformation; modules; multichannel filter design; preprocessing filter; space-time domain filter; steering matrices; Array signal processing; Direction of arrival estimation; Filters; Frequency estimation; Matrix decomposition; Sensor arrays; Signal design; Signal processing; Sparse matrices; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.111995

Filename

111995