Results 121 to 130 of about 287,056 (358)
CONTINUOUS WAVE RADARS–MONOSTATIC, MULTISTATIC AND NETWORK [PDF]
, 2006 Radar technology was designed to increase public safety on sea and in the air. Today radars are used in many fields of application, such as airdefense, air-traffic-control, zone protection (in military bases, airports, industry), people search and others. Classic pulse radars are often being replaced by continuous wave radars.
openaire +1 more source
, 2018 The diverse application areas of emerging monolithic noncontact radar sensors that are able to measure object’s distance and velocity is expected to grow in the near future to scales that are now nearly inconceivable.
M. Milovanovic
semanticscholar +1 more source
Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
Low power millimeter wave radar system for the visually impaired
The Journal of Engineering, 2019 In order to help visually impaired people to avoid obstacles, a K-band millimetre wave (MMW) radar system based on the principle of frequency-modulated continuous wave (FMCW) is proposed in this study.
Ningbo Long +4 more
doaj +1 more source
A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS
Advanced Electronic Materials, EarlyView.A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang +14 more
wiley +1 more source
Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
Heart Rate Variability Monitoring Based on Doppler Radar Using Deep Learning
SensorsThe potential of microwave Doppler radar in non-contact vital sign detection is significant; however, prevailing radar-based heart rate (HR) and heart rate variability (HRV) monitoring technologies often necessitate data lengths surpassing 10 s, leading ...
Sha Yuan +3 more
doaj +1 more source
, 2015 We present the results of a study of the azimuthal characteristics of ionospheric and seismic effects of the meteorite 'Chelyabinsk', based on the data from the network of GPS receivers, coherent decameter radar EKB SuperDARN and network of seismic ...
Bakhtiyarov, V. F. +8 more
core +1 more source
Advanced Electronic Materials, EarlyView.This work proposed an unsupervised physics‐informed deep learning method of generating space‐time‐coding metasurface coding patterns for arbitrary single‐ and dual‐beam requirements at each harmonic. This method is specially designed for the coding pattern design task of multi‐bit scenario, and it can effectively handle the optimization trouble caused ...
Jiang Han Bao +6 more
wiley +1 more source
The 250-kW CW klystron amplifier for planetary radar [PDF]
The design, construction, and performance testing is described of two Varian klystrons, model VKX-7864A, which replaced the aging and less efficient VA-949J klystrons in the X band planetary radar transmitter on the Goldstone, CA, 70 meter antenna.
Cormier, R., Mizuhara, A.
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