Results 51 to 60 of about 11,437 (192)

Hand Gesture Recognition Based on Continuous Wave (CW) Radar Using Principal Component Analysis (PCA) and K-Nearest Neighbor (KNN) Methods

JOIV: International Journal on Informatics Visualization, 2022
Human-computer interaction (HCI) is a field of study studying how people and computers interact. One of the most critical branches of HCI is hand gesture recognition, with most research concentrating on a single direction. A slight change in the angle of
Muhammad Khairani Abdul Rahman, Nur Emileen Abdul Rashid, Nor Najwa Ismail, Nor Ayu Zalina Zakaria, Zuhani Ismail Khan, Siti Amalina Enche Ab Rahim, Farah Nadia Mohd Isa   +6 more
doaj   +1 more source

Approximate Computation of DFT without Performing Any Multiplications: Applications to Radar Signal Processing

, 2014
In many practical problems it is not necessary to compute the DFT in a perfect manner including some radar problems. In this article a new multiplication free algorithm for approximate computation of the DFT is introduced. All multiplications $(a\times b)
Akbas, Cem Emre, Arslan, Musa Tunç, Bozkurt, Alican, Sevimli, Rasim Akin, Çetin, A. Enis   +4 more
core   +1 more source

Acceleration of Range Points Migration-Based Microwave Imaging for Nondestructive Testing [PDF]

, 2018
We report on an experimental investigation of the properties of volume holographic recording in photopolymerizable nanoparticle?polymer composites (NPCs) doped with chain transferring multifunctional di- and tri-thiols as chain transfer agents.
Shouhei Kidera, Shuto Takahashi
core   +2 more sources

AI‐Assisted Self‐Powered Wearable Dual‐Mode Sensor With TENG and Stretchable Optical Fiber for Neurological Disorder Diagnostics

Advanced Science, EarlyView.
This manuscript presents the WDMS platform, an AI‐assisted, self‐powered wearable dual‐mode sensor for tele‐neurology. It integrates a contact–separation TENG insole with stretchable polyurethane optical‐fiber strain sensors to synchronously track plantar pressure and lower‐limb muscle deformation.
Tianliang Li, Han Liu, Guoxu Liu, Qian'ao Wang, Haotian Zhou, Guiyi Liu, Yan Xu, Jun Wang, Zuqiang Wang, Feng Zhu, Feiling Luo, Zhong Lin Wang, Chi Zhang   +12 more
wiley   +1 more source

An Application of Analytic Wavelet Transform and Convolutional Neural Network for Radar Intrapulse Modulation Recognition

Sensors, 2023
This article analyses the possibility of using the Analytic Wavelet Transform (AWT) and the Convolutional Neural Network (CNN) for the purpose of recognizing the intrapulse modulation of radar signals.
Marta Walenczykowska, Adam Kawalec, Ksawery Krenc   +2 more
doaj   +1 more source

Dirac Surface‐State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te

Advanced Science, EarlyView.
Quaternary topological BiSbSe2Te are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy terahertz photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating
Tianning Zhang, Jinchao Tong, Jiantian Zhang, Peng Yu, Heng Luo, Luo Yan, Boyu Yang, Tiantian Huang, Junhui Ran, Yan Chen, Liujiang Zhou, Xin Chen, Ning Dai, Jianlu Wang, Junhao Chu   +14 more
wiley   +1 more source

Multi-target Micro-motion Feature Extraction Based on Tracking Pulses in MIMO Radar

Leida xuebao, 2018
The micro-motion feature is one of the important characteristic information of spatial target recognition. However, the existing multifunctional Multi-Input Multi-Output (MIMO) radar usually has to allocate a large number of continuous time resources for
Luo Ying, Gong Yishuai, Chen Yijun, Zhang Qun   +3 more
doaj   +1 more source

A Real-Time Evaluation Algorithm for Noncontact Heart Rate Variability Monitoring

Sensors, 2023
Noncontact vital sign monitoring based on radar has attracted great interest in many fields. Heart Rate Variability (HRV), which measures the fluctuation of heartbeat intervals, has been considered as an important indicator for general health evaluation.
Xiangyu Han, Qian Zhai, Ning Zhang, Xiufeng Zhang, Long He, Min Pan, Bin Zhang, Tao Liu   +7 more
doaj   +1 more source

KERNEL FEATURE CROSS-CORRELATION FOR UNSUPERVISED QUANTIFICATION OF DAMAGE FROM WINDTHROW IN FORESTS [PDF]

, 2016
In this study estimation of tree damage from a windthrow event using feature detection on RGB high resolution imagery is assessed. An accurate quantitative assessment of the damage in terms of volume is important and can be done by ground sampling, which
D. Travaglini, E. Kutchartt, F. Bottalico, F. Giannetti, F. Pirotti, F. Pirotti, G. Chirici   +6 more
core   +2 more sources

Discovering Interpretable Semantics from Radio Signals for Contactless Cardiac Monitoring

Advanced Science, EarlyView.
This study presents a semantic representation framework for clinically interpretable cardiac monitoring from contactless radio signals. It formulates radio semantic learning as an information‐bottleneck problem and approximates the objective via intra‐modal compression and cross‐modal alignment, structuring radio measurements into meaningful semantic ...
Jinbo Chen, Haoyu Wang, Guixin Xu, Yuqin Yuan, Xinmeng Cai, Zhengwu Wei, Dongheng Zhang, Qibin Sun, Tianwei Zhang, Cuntai Guan, Yan Chen   +10 more
wiley   +1 more source