Results 41 to 50 of about 2,554 (206)
Sensors, 2023 Multiple autonomous underwater vehicles (AUVs) have gradually become the trend in underwater operations. Identifying and detecting these new underwater multi-targets is difficult when studying underwater moving targets. A 28-element transducer is used to
Xiaofeng Yin +3 more
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Sensors, 2021 Surface reconstruction for micro-samples with large discontinuities using digital holography is a challenge. To overcome this problem, multi-incidence digital holographic profilometry (MIDHP) has been proposed. MIDHP relies on the numerical generation of
Moncy Sajeev Idicula +5 more
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Autofocusing of optical scanning holography based on entropy minimization [PDF]
, 2015 In optical scanning holography, extracting distance of object is an indispensable step for numerical reconstruction. In this paper, we use entropy as a measurement to achieve autofocusing under different situations.
Lam, E +7 more
core +1 more source
An optimum design of a ring Airyprime beam array based on dimensionless eccentric position
Results in PhysicsThe beam array with abruptly autofocusing capability weakens the turbulence effect in free space optical (FSO) communication systems with relatively low complexity, thereby improving the communication quality of FSO communication systems.
Yi-Min Zhou +4 more
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Logarithmic Laplacian Prior Based Bayesian Inverse Synthetic Aperture Radar Imaging
Sensors, 2016 This paper presents a novel Inverse Synthetic Aperture Radar Imaging (ISAR) algorithm based on a new sparse prior, known as the logarithmic Laplacian prior.
Shuanghui Zhang +3 more
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Use of genetic algorithms for ISAR image autofocusing
, 2004 One of the most critical steps of ISAR image processing is the motion compensation, also known as ISAR Image focusing. For non-cooperative targets and especially when external data are not available, autofocusing techniques must be used.
Bruscoli, Silvia +2 more
core +3 more sources
Enhanced Rapid Autofocus Back-Projection for PBSAR Based on the GEO Satellite
Remote SensingThe passive bistatic synthetic aperture radar (PBSAR) is recognized as a critical developmental direction for future radar systems. To validate its operational feasibility, we designed a PBSAR system. However, significant measurement errors were observed
Te Zhao +4 more
doaj +1 more source
Three Dimensional Auto-Alignment of the ICSI Pipette
IEEE Access, 2019 Intracytoplasmic sperm injection (ICSI) is an assisted reproductive technology used in infertility treatment, where a single sperm is selected and immobilized using a glass injection pipette and is inserted directly into the cytoplasm of an oocyte under ...
Ferhat Sadak +2 more
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Lightweight smart autofocusing eyeglasses
MOEMS and Miniaturized Systems XVII, 2018 More than 100 million people in the United States of America alone suffer from age-related presbyopia caused by a loss of focal accommodation of the eye crystalline lens as the lens stiffens with age. The resulting accommodative error or lag produces blurred images of objects placed at different distances.
N, Hasan +6 more
openaire +3 more sources
EXPERIMENTAL KA-BAND GROUND-BASED SAR SYSTEM
Radio Physics and Radio Astronomy, 2015 An experimental ground-based synthetic aperture radar (GB-SAR) system operating at Ka-band has been developed. The system is designed to be operated from a top a hill or from a building roof, etc. for imaging the underlying ground terrain.
O. O. Bezvesilniy +6 more
doaj +1 more source