Abstract
Diagonal loading is a simple and effective method for robustness enhancement of the Capon beamformer against perturbation in the presumed steering vector of the signal-of-interest (SOI). However, the determination of an appropriate diagonal loading level is not a trivial task. Three noncircularity restoral based methods are herein proposed for selecting the diagonal loading level to recover a noncircular SOI buried in circular and/or noncircular interferences plus circular background noise. Monte Carlo simulations are performed to verify the efficacy of the proposed methods.
| Original language | English |
|---|---|
| Pages (from-to) | 670-680 |
| Number of pages | 11 |
| Journal | Signal Processing |
| Volume | 94 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2014 |
Keywords
- Capon beamformer
- Diagonal loading
- Noncircularity
- Robust adaptive beamforming
- Steering vector error
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Xu, Y., Ma, J., Liu, Z., & Liu, W. (2014). A class of diagonally loaded robust Capon beamformers for noncircular signals of interest. Signal Processing, 94(1), 670-680. https://doi.org/10.1016/j.sigpro.2013.07.013