Results 31 to 40 of about 3,144,647 (278)
Scanning Inside Volcanoes with Synthetic Aperture Radar Echography Tomographic Doppler Imaging
Remote Sensing, 2022 A problem with synthetic aperture radars (SARs) is that due to the poor penetrating action of electromagnetic waves within solid bodies, the ability to see through distributed targets is precluded.
Filippo Biondi
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Vibration-Assisted Roll-Type Polishing System Based on Compliant Micro-Motion Stage. [PDF]
Micromachines (Basel), 2018 This paper aims to create a high-quality surface based on the linear contact material removal mechanism. For this paper, a piezo-driven, flexure-based micro-motion stage was developed for the vibration-assisted roll-type precision polishing system ...
Gu Y +6 more
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Research trends in China for macro-micro motion platform for microelectronics manufacturing industry
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021 Integrated circuits industry is inherently linked to the national economy development and the security national defense in China. Its product quality and productivity as bottleneck resolutions are crucially depended on the performance of microelectronic ...
Xue-li Li +4 more
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The Method of Trajectory and Attitude Data Generation for Space Target
Xibei Gongye Daxue Xuebao, 2019 To solve the problem of space targets' trajectory and attitude data generation in system simulation, the characteristics of various types of ballistic missiles and their midcourse targets are analyzed deeply.
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An approach of motion compensation and ISAR imaging for micro-motion targets
, 2021 Inverse synthetic aperture radar (ISAR) imaging of the target with the non-rigid body is very important in the field of radar signal processing. In this paper, a motion compensation method combined with the preprocessing and global technique is proposed ...
Wang Yong +3 more
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Leida xuebao, 2023 Radar echo modeling based on dynamics and kinematics serves as the theoretical basis for micro-Doppler characteristic analysis and projectile parameter extractions.
Zhihua GONG +3 more
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Advancements in Research on Micro-motion Feature Extraction in the Terahertz Region
Leida xuebao, 2018 With years of development and accumulation, a considerable amount of research has focused on micro-motion, an important auxiliary feature in radar target detection and recognition. With the recent rise of terahertz, micro-motion feature extraction in the
Yang Qi +3 more
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Spectral De-Aliasing Method of Micro-Motion Signals Based on a Complex-Valued U-Net Network
Remote Sensing, 2023 Spectrum aliasing occurs in signal echoes when the sampling frequency does not comply with the Nyquist Sampling Theorem. In this scenario, the extraction of micro-motion parameters becomes challenging.
Ming Long +5 more
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TRIBOLOGICAL IMPLICATIONS OF THP MODULARIZATION [PDF]
Proceedings on Engineering Sciences, 2019 The aim of the paper is to highlight the advantages of the modularization of the femoral component of the Total Hip Prosthesis (THP), especially the tribological implications it presumes (fretting wear of the modular junctions, fatigue and corrosion by ...
Lucian CAPITANU +2 more
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ActuatorsAiming at problems such as the reduced positioning accuracy and insufficient dynamic response caused by the inherent hysteresis nonlinearity of piezoelectric actuators, this paper proposes a hysteresis modeling and compensation method for piezoelectric ...
Zhisheng Ren +4 more
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