In the scientific and industrial community a growing interest is nowadays devoted to sound source localization techniques. Among all the existing methods, the use of the beamforming algorithm in sound source localization problems is increasing, thanks to its many advantages if compared to the other available methods (Nearfield Acoustic Holography and Helmholtz Equation Least Square Method). The...

Adaptive optics (AO) systems take sampled measurements of the wave-front phase. Because in the general case the spatial-frequency content of the phase aberration is not band limited, aliasing will occur. This aliasing will cause increased residual error and increased scattered light in the point-spread function (PSF). The spatially filtered wave-front sensor (SFWFS) mitigates this phenomenon by...

Two or more different entities that appear identical when observed in isolation are perceptually aliased. While the nature of perceptual aliasing is clearly general and its occurrence depends on the kind of entities and perceptual skills assumed, it originates a very practical problem when it comes to acquiring purposeful spatial representations, e.g., maps, of an unknown environment under expl...

SUMMARY Temporal aliasing errors resulting from the undersampling of non-tidal atmospheric as well oceanic mass variations constitute largest limitation towards retrieval monthly gravity solutions based on GRACE and GRACE-FO satellite missions. Their mitigation is thus a primary goal current research. Unfortunately, two-step co-parametrization approach proposed for application in Bender-type sc...

Correlation filters (CFs) are well established and useful tools for a variety of tasks in signal processing and pattern recognition, including automatic target recognition and tracking, biometrics, landmark detection, and human action recognition. Traditionally, CFs have been designed and implemented efficiently in the frequency domain using the discrete Fourier transform (DFT). However, the el...

Diffusion-weighted imaging (DWI) obtained with interleaved echo-planar imaging (EPI) pulse sequence has great potential of characterizing brain tissue properties at high spatial-resolution. However, interleaved EPI based DWI data may be corrupted by various types of aliasing artifacts. First, inconsistencies in k-space data obtained with opposite readout gradient polarities result in Nyquist ar...