Title
Beamspace ESPRIT for multi-source arrival angle estimation employing tapered windows
Document Type
Conference Presentation
Department
Electrical and Computer Engineering
Conference Title
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Date of Presentation
1-1-2002
Abstract
This paper presents two new algorithms that operate in beamspace and provide closed-form arrival angle estimates in conjunction with uniform linear arrays. The algorithms window the array data using either a cosine shaped window or a Hanning window prior to beamforming. The resulting array patterns have low sidelobe levels (peak sidelobe level ≈ -23.5dB for cosine window, peak sidelobe level ≈ -32.3dB for Hanning window) and provide enhanced out-of-band source suppression. In contrast, the existing DFT Beamspace ESPRIT algorithm employs a rectangular window; the resulting array pattern has a peak sidelobe level of ≈ -13.5dB. The new algorithms clearly provide better out-of-band source suppression than DFT Beamspace ESPRIT. They can provide arrival angle estimates of sources in a given spatial sector without being swamped by powerful sources lying outside the sector of interest.
ISSN
1520-6149
Volume
3
First Page
3009
Last Page
3012
DOI
10.1109/ICASSP.2002.5745282
Recommended Citation
Mathews, C. P.,
&
Zoltowski, M. D.
(2002).
Beamspace ESPRIT for multi-source arrival angle estimation employing tapered windows.
Paper presented at ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings.
https://scholarlycommons.pacific.edu/soecs-facpres/431
