Title :
Broad-band, beam-space, signal-subspace source localization
Author :
Buckley, K.M. ; Xu, X.L.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
A general reconfigurable real-time preprocessing structure is proposed and discussed for broadband signal-subspace spatial-spectral estimators. This reduced-dimension beam-space (RDBS) focusing preprocessor focuses broadband sources and effectively reduces the observation dimension before a source localization computation. The preprocessing structure is considered for use in estimating the locations of broadband sources from array data using both H. Wang and M. Kaveh´s (1985) coherent-signal-subspace method and K.M. Buckley and L.J. Griffiths´ (1986) broadband signal subspace spatial spectrum (BASS-ALE) estimation technique. An example of RDBS used with BASS-ALE to simulate a linear equispaced broadband array of 16 omnidirectional elements is included.<>
Keywords :
antenna arrays; radio direction-finding; signal detection; spectral analysis; array data; beam space source localisation; broadband estimators; broadband sources; coherent-signal-subspace method; estimation technique; focusing preprocessor; linear equispaced broadband array; omnidirectional elements; reduced-dimension beam-space; signal detection; signal-subspace source localization; signal-subspace spatial-spectral estimators; Adaptive filters; Apertures; Array signal processing; Butler matrix; Cascading style sheets; Filtering; Multiple signal classification; Narrowband; Position measurement; Spatial filters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94040
