Articles with "point like" as a keyword



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Point-like perturbation of Rashba Hamiltonian

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Published in 2020 at "Complex Variables and Elliptic Equations"

DOI: 10.1080/17476933.2019.1709969

Abstract: Quantum system with spin–orbit interaction in three-dimensional space is considered. Point-like perturbation for Rashba Hamiltonian is constructed in the framework of the theory of self-adjoint extensions of symmetric operators. Boundary triplet approach is used. The… read more here.

Keywords: rashba hamiltonian; point like; perturbation rashba; like perturbation ... See more keywords
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SAR tomography for point-like and volumetric scatterers using a regularised iterative adaptive approach

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Published in 2018 at "Remote Sensing Letters"

DOI: 10.1080/2150704x.2018.1508911

Abstract: ABSTRACT Synthetic aperture radar (SAR) tomography has been shown to be an effective and important tool for the monitoring of infrastructures and the investigation of forest vertical structure. However, the existing tomographic imaging algorithms, including… read more here.

Keywords: sar tomography; iterative adaptive; volumetric scatterers; adaptive approach ... See more keywords

Limits on point-like sources of ultra-high-energy neutrinos with the Pierre Auger Observatory

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Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/11/004

Abstract: With the Surface Detector array (SD) of the Pierre Auger Observatory we can detect neutrinos with energy between 10(17) eV and 10(20) eV from point-like sources across the sky, from close to the Southern Celestial… read more here.

Keywords: limits point; energy; pierre auger; like sources ... See more keywords
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Prospects of cosmic superstring detection through microlensing of extragalactic point-like sources

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz2855

Abstract: The existence of cosmic superstrings may be probed by astronomical time domain surveys. When crossing the line of sight to point-like sources, strings produce a distinctive microlensing signature. We consider two avenues to hunt for… read more here.

Keywords: cosmic superstring; prospects cosmic; like sources; superstring detection ... See more keywords
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Adaptive Detection and Range Estimation of Point-Like Targets With Symmetric Spectrum

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Published in 2017 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2017.2756076

Abstract: In this letter, we address adaptive radar detection of point-like targets in Gaussian clutter with an unknown covariance matrix. To this end, we first exploit the symmetrically structured power spectral density of the clutter to… read more here.

Keywords: point like; detection; range estimation; like targets ... See more keywords
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Novel Parameter Estimation and Radar Detection Approaches for Multiple Point-Like Targets: Designs and Comparisons

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Published in 2020 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2020.3028034

Abstract: In this work, we develop and compare two innovative strategies for parameter estimation and radar detection of multiple point-like targets. The first strategy, which appears here for the first time, jointly exploits the maximum likelihood… read more here.

Keywords: radar detection; parameter estimation; estimation radar; multiple point ... See more keywords
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Self-calibrated general model-based wavefront sensorless adaptive optics for both point-like and extended objects.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.454901

Abstract: The deformable mirror (DM) in conventional model-based wavefront sensorless adaptive optics (WFSless AO) must be calibrated in advance by an additional WFS in order to precisely generate predetermined bias modes with known amplitudes. Although the… read more here.

Keywords: point like; like extended; optics; extended objects ... See more keywords