Results 21 to 30 of about 2,700,967 (284)
Extending AMCW lidar depth-of-field using a coded aperture [PDF]
, 2011 By augmenting a high resolution full-field Amplitude Modulated Continuous Wave lidar system with a coded aperture, we show that depth-of-field can be extended using explicit, albeit blurred, range data to determine PSF scale. Because complex domain range-
Michael J. Cree +5 more
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Micromachines, 2022 As a widely clinical detection method, ultrasonography (US) has been applied to the diagnosis of breast cancer. In this paper, the multi-element synthetic aperture focusing (M-SAF) is applied to the ring array of breast ultrasonography (US) imaging ...
Yang Wu +8 more
doaj +1 more source
IEEE Access, 2023 We have proposed a novel process flow for translational-invariant (TI) and ultrahigh-resolution (UHR) bistatic synthetic aperture radar (BSAR) operations, wherein a UHR BSAR image is obtained via coherent integration of sub-aperture images, and its two ...
Byung-Soo Kang
doaj +1 more source
Photonics, 2021 The spontaneous-emission enhancement effect of a single metallic rectangular-aperture optical nanoantenna on a SiO2 substrate was investigated theoretically.
Xinyue Zhang +5 more
doaj +1 more source
Lucky imaging and aperture synthesis with low-redundancy apertures [PDF]
, 2009 Lucky imaging, used with some success in astronomical and even horizontal-path imaging, relies on fleeting conditions of the atmosphere that allow momentary improvements in image quality, at least in portions of an image.
Ward, Jennifer E. +2 more
core +1 more source
High resolution digital holographic synthetic aperture applied to deformation measurement and extended depth of field method [PDF]
, 2010 This paper discusses the potential of the synthetic-aperture method in digital holography to increase the resolution, to perform high accuracy deformation measurement, and to obtain a three-dimensional topology map.
Claus, Daniel
core +1 more source
Synthetic aperture guided wave imaging using a mobile sensor platform [PDF]
, 2012 This oral session at conference looks at synthetic aperture guided wave imaging using a mobile sensor ...
Summan, Rahul +4 more
core +5 more sources
Photonics, 2022 In this work, we experimentally investigate the nonlinear dynamics of an interband cascade laser (ICL) under variable-aperture optical feedback implemented by a gold mirror combining with a ring-actuated iris diaphragm (RAID). By continuously varying the
Maorong Zhao +7 more
doaj +1 more source
Investigation of the equivalent circuit parameters and design of a dual polarised dual frequency aperture coupled microstrip antenna [PDF]
, 2013 This paper presents a simplified approach to the design of a single feed dual polarised, dual frequency (1.9 and 2.4 GHz) aperture coupled microstrip antenna. Using simulation and practical investigation, the coupling between the microstrip feed line and
Ghassemlooy, Zabih +7 more
core +1 more source
Multi-aperture imaging with Fermat spiral sub-aperture arrangement
Optics Express, 2023 Multi-aperture optical telescopes have been extensively studied owing to their high resolution, low cost, and light weight. The next generation of optical telescopes is predicted to be equipped with dozens or even hundreds of segmented lenses; therefore, it is necessary to optimize the arrangement of the lens array.
Wei Li +6 more
openaire +2 more sources