Robust signal recovery using the prolate spherical wave functions and maximum correntropy criterion
Sign Up to like & getrecommendations! Published in 2018 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2017.10.025
Abstract: Abstract Signal recovery is one of the most important problem in signal processing. This paper proposes a novel signal recovery method based on prolate spherical wave functions (PSWFs). PSWFs are a kind of special functions,… read more here.
Keywords: recovery; criterion; wave functions; spherical wave ... See more keywords
Scintillation index of optical spherical wave propagating through biological tissue
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2016.1214760
Abstract: Abstract Effects of the tissue turbulence on the propagation of an optical spherical wave are analysed. For this purpose, scintillation index of an optical spherical wave which is propagating in a soft tissue is formulated… read more here.
Keywords: index; scintillation index; tissue; optical spherical ... See more keywords
Spherical mm-Wave/THz Antenna Measurement System
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2993698
Abstract: This paper presents an automatic characterization system for mm-wave antennas based on a spherical positioning system. It features network-analysis based far-field- and $S$ -parameter measurement of probe- and waveguide-fed antennas between 220 GHz and 330… read more here.
Keywords: far field; system; antenna; measurement ... See more keywords
Assessment of mmWave Exposure From Antenna Based on Transformation of Spherical Wave Expansion to Plane Wave Expansion
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3103813
Abstract: To protect human beings from overexposure to mmWave electromagnetic fields, international guidelines and standard specified the (exposure) reference level in terms of the peak spatial-average incident power density (psPD). In this study, we proposed a… read more here.
Keywords: wave expansion; plane; transformation spherical; expansion ... See more keywords
Spherical Wave Positioning Based on Curvature of Arrival by an Antenna Array
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2018.2877971
Abstract: Array processing is a key technology for emerging mobile networks, especially in short to moderate range and line-of-sight scenarios. In these scenarios, the incoming wavefront can be modeled by a spherical wave. The wavefront curvature,… read more here.
Keywords: array; wave positioning; curvature arrival; antenna array ... See more keywords
Multiple-information security system using spherical wave and chaotic random phase mask encoding
Sign Up to like & getrecommendations! Published in 2018 at "Optical Engineering"
DOI: 10.1117/1.oe.57.9.093103
Abstract: Abstract. An asymmetric multiple-information cryptosystem based on spherical wave and chaotic random phase mask (CRPM) is proposed. In this security system, each secret color image is decomposed into R, G, and B channels and then… read more here.
Keywords: multiple information; chaotic random; wave; security ... See more keywords
Resolution and sampling analysis in digital in-line holography with spherical wave illumination
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.59.10.102402
Abstract: Abstract. The resolution optimization and sampling strategies in practical digital in-line holography (DIH) with spherical wave illumination are analytically studied by optimizing system parameters. Optimal parameters of holographic recording, including illumination wavelength, numerical aperture of… read more here.
Keywords: resolution; digital line; wave; illumination ... See more keywords
Point diffraction interferometer based on a silicon nitride waveguide spherical wave source.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.461806
Abstract: A point diffraction interferometer based on silicon nitride waveguide (WG-PDI), adopting a silicon nitride waveguide spherical wave source (WG-SWS) with Si substrate and SiO2 cladding, is proposed for spherical surface testing. The WG-SWS is used… read more here.
Keywords: silicon nitride; point diffraction; spherical wave; diffraction interferometer ... See more keywords
Aberration-reduced spherical concave grating holographically recorded by a spherical wave and a toroidal wave for Rowland circle mounting.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.003294
Abstract: We propose a new recording system that employs a spherical wave and a toroidal wave to holographically record an aberration-reduced Rowland-circle spherical grating. Two more variables in this recording system are available for the design… read more here.
Keywords: aberration reduced; wave toroidal; aberration; toroidal wave ... See more keywords
Two-Step Converging Spherical Wave Diffracted at a Circular Aperture of Digital In-Line Holography
Sign Up to like & getrecommendations! Published in 2022 at "Micromachines"
DOI: 10.3390/mi13081284
Abstract: The aspheric light emitted from a pinhole restrains the reconstruction quality of a digital in-line hologram. Herein, the Fresnel-diffracted spot from the first step converging spherical wave diffracted at a rough circular aperture is collimated… read more here.
Keywords: converging spherical; wave diffracted; spherical wave; digital line ... See more keywords