Results 51 to 60 of about 1,999,725 (279)
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. +6 more
core +1 more source
Millimeter wave radar for high resolution 3D near field imaging for robotics and security scans
, 2022 S.423-432This paper presents different millimeter wave systems for robotic mapping and localization as well as for security scan applications. The 2D system in the first part of this paper is mechanically rotating the radar module to allow a continous ...
Nowok, S. +4 more
core +1 more source
Advanced Materials Technologies, EarlyView.Copper electroplating transforms lightweight 3D‐printed TPMS polymer lattices into effective electromagnetic shields. Topology, relative density, and conductive seed layer continuity govern copper penetration, electrical resistance, and attenuation. SEA consistently exceeds SER, while 35% RD Diamond lattice gives the best performance, reaching 48.72 dB
Aman Al Khatib +6 more
wiley +1 more source
Contactless Electrocardiogram Monitoring With Millimeter Wave Radar
IEEE Transactions on Mobile ComputingThe electrocardiogram (ECG) has always been an important biomedical test to diagnose cardiovascular diseases. Current approaches for ECG monitoring are based on body attached electrodes leading to uncomfortable user experience. Therefore, contactless ECG monitoring has drawn tremendous attention, which however remains unsolved.
Jinbo Chen 0001 +5 more
openaire +2 more sources
Active millimeter-wave imaging using raster scanner
, 2022 Paper 730808A millimeter-wave imaging system has been developed operating at a center frequency of 94 GHz. The system has a single stationary mounted transmit and receive lensed horn antenna and two moving mirrors in x and y.
Leuther, Arnulf +5 more
core +1 more source
Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots
Advanced Robotics Research, EarlyView.This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou +4 more
wiley +1 more source
Remote SensingMillimeter-wave radars are widely used in various environments due to their excellent detection capabilities. However, the detection performance in severe weather environments is still an important research challenge.
Chengjin Zhan +3 more
doaj +1 more source
Correlative Scan Matching Position Estimation Method by Fusing Visual and Radar Line Features
Remote Sensing, 2023 Millimeter-wave radar and optical cameras are one of the primary sensing combinations for autonomous platforms such as self-driving vehicles and disaster monitoring robots.
Yang Li +3 more
doaj +1 more source
Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers
Advanced Science, EarlyView.Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren +5 more
wiley +1 more source
Millimeter-wave radar systems for biometric applications
SPIE Proceedings, 2009 Millimeter-wave and terahertz radar systems can play an important role in multimodal layered sensing systems targeted at measuring both physiological and behavioral biometric data for security and medical applications. We will describe a 228 GHz heterodyne radar system that is capable of measuring respiration rates at standoff distances of up to 50 ...
Petkie, Douglas T. +3 more
openaire +3 more sources