Results 101 to 110 of about 89,842 (301)
, 2003 This paper presents a new estimator for the velocity of a mobile station in microcellular systems. The proposed estimator is based on the zero-crossing rate of the instantaneous frequency of the received signal.
B. Senadji +8 more
core +1 more source
Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
wiley +1 more source
Instantaneous Frequency Estimation of Radio Frequency Signal Based on Rydberg Atomic Receiver
IEEE Photonics JournalRydberg atom receiver attracts much research interest for promising applications in communications and sensing. Generally, Rydberg atomic receiver is utilized with microwave frequency comb (MFC) to expand its detectable frequency range. MFC consists of a
Guanyu Chen +3 more
doaj +1 more source
IF Estimation Using Spectrogram and Scalogram [PDF]
Journal of Electrical and Electronics Engineering, 2013 This paper presents the results obtained using an instantaneous frequency estimation method, based upon the detection of the peaks of the spectrogram and the scalogram.
REIZ Romulus, MORGOŞ Lucian
doaj
Crystal Growth Engineering for Dendrite‐Free Zinc Metal Plating
Advanced Materials, EarlyView.This research employed the rare‐earth ion dysprosium (Dy) to modulate aqueous zinc (Zn) metal plating. Integrated multiscale experiments and computational modeling unveiled the preferential adsorption of Dy on specific crystal facets, which activated screw dislocation‐driven Zn growth.
Guifang Zeng +10 more
wiley +1 more source
Shock and Vibration, 2016 Shock pulse method is a widely used technique for condition monitoring of rolling bearing. However, it may cause erroneous diagnosis in the presence of strong background noise or other shock sources. Aiming at overcoming the shortcoming, a pulse adaptive
Jinbao Yao, Baoping Tang, Jie Zhao
doaj +1 more source
Self‐Cooling Molecular Spin Qudits
Advanced Materials, EarlyView.A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios +12 more
wiley +1 more source
Parallel all-optical instantaneous frequency measurement system using channel labeling
, 2012 A novel system, offering simultaneous and parallel instantaneous frequency measurements, is demonstrated. The choice of optical wavelengths is unconstrained and thus a practical approach for multiple instantaneous frequency measurements is achieved with ...
Mitchell, A +3 more
core +1 more source
Diagnosis of bolt loosening using reflected ultrasonic pulse
Nihon Kikai Gakkai ronbunshu, 2019 Diagnosis of the bolt loosening is important in the industrial field and the medical field such as dental implants. This study proposes a new non-destructive testing method for the bolt loosening using ultrasonic pulse projected to the side of the bolt ...
Ren KADOWAKI, Shoki IKEDA, Takumi INOUE
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Advanced Materials, EarlyView.This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau +9 more
wiley +1 more source