Title :
Statistical performance comparison of MUSIC in element-space and beam-space
Author :
Xu, Xiao Liang ; Buckley, Kevin M.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
Statistics of the spatial null spectra, generated from reduced-dimension beam-space (RDBS) data and MUSIC, are investigated and compared with those from element-space MUSIC. The authors consider analytically the estimated null-spectra mean and variance, particularly at critical points that determine spectral resolvability. Approximate expressions for resolution thresholds for element-space and RDBS are compared. Monte Carlo simulations are presented to support the analysis and to provide further insight. A matrix beamformer provides the transformation from element-space to RDBS. Comparisons provide insight into characteristics of the matrix beamformer that affect RDBS resolvability
Keywords :
filtering and prediction theory; signal detection; MUSIC; Monte Carlo simulations; beam-space; element-space; matrix beamformer; mean; reduced-dimension beam-space; resolution thresholds; signal detection; spatial null spectra; variance; Analytical models; Gaussian noise; Multiple signal classification; Narrowband; Position measurement; Sensor arrays; Signal processing; Signal resolution; Spatial resolution; Statistics;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266882
