Results 1 to 10 of about 3,555,139 (105)

Contact reliability modeling and assessment of electrical connectors with multi-aperture slotted leaf spring contacts

open access: yesAdvances in Mechanical Engineering, 2023
Multi-aperture electrical connectors are widely used in the aerospace system to provide high-reliability and high-quality connections. The existing reliability assessment methods only focus on the single-aperture electrical connectors, and ignored the ...
Ping Qian   +4 more
doaj   +2 more sources

Comparison Between Single-Aperture and Multi-Aperture Approaches to Computer Correction of Images [PDF]

open access: yesEPJ Web of Conferences, 2020
The effectiveness of the reconstruction of images formed by single- and multi-aperture systems and distorted by an atmospheric turbulence is analyzed in this work.
Dudorov Vadim, Eremina Anna
doaj   +4 more sources

A Novel Multi-Aperture Based Sun Sensor Based on a Fast Multi-Point MEANSHIFT (FMMS) Algorithm

open access: yesSensors, 2011
With the current increased widespread interest in the development and applications of micro/nanosatellites, it was found that we needed to design a small high accuracy satellite attitude determination system, because the star trackers widely used in ...
Gao-Fei Zhang   +3 more
doaj   +3 more sources

RTS Noise and Dark Current White Defects Reduction Using Selective Averaging Based on a Multi-Aperture System

open access: yesSensors, 2014
In extremely low-light conditions, random telegraph signal (RTS) noise and dark current white defects become visible. In this paper, a multi-aperture imaging system and selective averaging method which removes the RTS noise and the dark current white ...
Bo Zhang   +5 more
doaj   +3 more sources

Statistical Model of Digital Coherent Combining Efficiency in Multi-aperture Receivers

open access: yesGuangtongxin yanjiu, 2022
In order to mitigate the performance fading of Free-Space Optical (FSO) communication system caused by atmospheric turbulence, a multi-aperture receiving scheme based on digital coherent beam combining is used.
Jing-song XIANG, Xin-hao Lü
doaj   +3 more sources

A multi‐aperture coupling liquid attenuator

open access: yesIET Microwaves, Antennas & Propagation, 2021
A liquid attenuator with multi‐aperture coupling is proposed. It consists of two coupled rectangular waveguide cavities, two transparent containers and pure water.
Dandan Yan   +4 more
doaj   +1 more source

Ionospheric Phase Scintillation Correction Based on Multi-Aperture Faraday Rotation Estimation in Spaceborne P-Band Full-Polarimetric SAR Data

open access: yesRemote Sensing, 2022
The spaceborne P-band fully polarimetric synthetic aperture radar (SAR) working system is highly susceptible to the scintillation effects induced by ionospheric irregularities due to its low carrier frequency.
Feixiang Tang   +4 more
doaj   +1 more source

Research on the Multi-Point Gravity Balance Method for the Large-Aperture Space Camera in the Imaging Quality Test

open access: yesPhotonics, 2023
The large-aperture space camera needs gravity unloading in the ground imaging quality test. The multi-point gravity balance method is mainly applied to the object with symmetrical structure and regular mass distribution, such as the primary mirror of the
Lihao Zhang   +3 more
doaj   +1 more source

Research on the Multi-Element Synthetic Aperture Focusing Technique in Breast Ultrasound Imaging, Based on the Ring Array

open access: yesMicromachines, 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

Calculation of Temperature Rise in Multi-layer Biological Tissue Based on Large Aperture Concave Sphere Focused Ultrasonic Transducer [PDF]

open access: yesIranian Journal of Medical Physics, 2023
Introduction: The large aperture concave spherical focused ultrasonic transducer has stronger acoustic focusing effect and can obtain good temperature rise effect. The purpose of this study was to explore the effect of different frequency, duty cycle and
HU DONG   +3 more
doaj   +1 more source

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