Results 91 to 100 of about 6,349 (294)

Millimetre wave imaging for concealed target detection

, 2011
PhDConcealed weapon detection (CWD) has been a hot topic as the concern about pub- lic safety increases. A variety of approaches for the detection of concealed objects on the human body based on earth magnetic ¯eld distortion, inductive magnetic ¯eld,
Zhang, Lianhong
core  

Millimeter resolution with radar at lower terahertz

, 2022
S.235-238This paper describes the setup and measurement of a high bandwidth millimeter wave FMCW radar working at 300 GHz. The usable bandwidth of 40 GHz leads to a range resolution of 3.7 nm.
Wahlen, A., Wilcke, J., Leuther, Arnulf, Caris, M., Stanko, S., Tessmann, Axel, Sommer, R.   +6 more
core  

Multi Ray Model for Near-Ground Millimeter Wave Radar

Sensors, 2017
A quasi-optical multi-ray model for a short-range millimeter wave radar is presented. The model considers multi-path effects emerging while multiple rays are scattered from the target and reflected to the radar receiver. Among the examined scenarios, the
Ariel Etinger, Boris Litvak, Yosef Pinhasi   +2 more
doaj   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

Advanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

Human fall detection method based on 4D point cloud and track information

Dianzi Jishu Yingyong
In family and medical health monitoring, timely and accurate real-time monitoring of elderly falls is an important topic, and millimeter wave radar has shown great application potential in non-contact fall detection.
Zhou Yang, Li Jianpeng, Wang Zhiyu, Liang Qingzhen   +3 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Smart Flexible Tactile Sensors: Recent Progress in Device Designs, Intelligent Algorithms, and Multidisciplinary Applications

Advanced Intelligent Discovery, EarlyView.
Flexible tactile sensors have considerable potential for broad application in healthcare monitoring, human–machine interfaces, and bioinspired robotics. This review explores recent progress in device design, performance optimization, and intelligent applications. It highlights how AI algorithms enhance environmental adaptability and perception accuracy
Siyuan Wang, Ming Dong, Rongrong Bao, Caofeng Pan   +3 more
wiley   +1 more source

Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics

Advanced Physics Research, EarlyView.
This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu, Qi Lu, Pan Hu, Yuan Zhong, Yu He, Yaojing Zhang, Young‐Ik Sohn, Yikai Su, Lu Sun   +8 more
wiley   +1 more source

Toward Millimeter-Wave Joint Radar Communications: A Signal Processing Perspective [PDF]

, 2019
peer reviewedSynergistic design of communications and radar systems with common spectral and hardware resources is heralding a new era of efficiently utilizing a limited radio-frequency (RF) spectrum.
OTTERSTEN, Björn, Vorobyov, Sergei, Koivunen, Visa, SHANKAR, Bhavani, Mishra, Kumar Vijay   +4 more
core   +1 more source

Poseidon's Sanctuary at Samikon—The Discovery of an Ancient Temple Through an Integrated Geophysical and Geoarchaeological Survey Approach for Lagoonal and Swampy Environments

Archaeological Prospection, EarlyView.
ABSTRACT Below the classical fortress of Samikon at the coast of the western Peloponnese, ancient writer Strabo mentioned a sanctuary of Poseidon which served as the centre of the religious association of the Triphylian cities. In this paper, we describe the discovery and investigation of a building structure by means of geophysical and ...
Dennis Wilken, Birgitta Eder, Sarah Bäumler, Elena Appel, Peter Fischer, Tina Georg, Federica Iannone, Lena Slabon, Timo Willershäuser, Erofili‐Iris Kolia, Andreas Vött   +10 more
wiley   +1 more source