Results 91 to 100 of about 5,138,507 (193)

An EMD Based Sense-Through-Foliage Target Detection UWB Radar Sensor Networks

open access: yesIEEE Access, 2018
In this paper, we propose an empirical mode decomposition (EMD)-based approach to ultra wide band radar for sense-through-foliage target detection. When the radar signal quality is good, the EMD-based target detection approach performs well by comparing ...
Ganlin Zhao   +2 more
doaj   +1 more source

Breast cancer tumour detection using microwave radar techniques [PDF]

open access: yes, 2004
A breast cancer detection technique using multi-static radar is proposed herein. Images of a breast tumour are produced using this technique, with backscatter data. A wideband antenna design suitable for a breast cancer detection system is also described.
Benjamin, R   +4 more
core  

Near-infrared perfect absorption achieved with graphene-LiF multilayer metamaterial

open access: yesiScience
Summary: Achieving perfect absorption of electromagnetic radiation across the near-infrared (NIR) to short-wave infrared spectrum is critical for various applications. While previous studies have demonstrated tunable absorption in graphene-based systems,
Muhammad Imran   +4 more
doaj   +1 more source

Accurate detection of moving targets via random sensor arrays and Kerdock codes

open access: yes, 2013
The detection and parameter estimation of moving targets is one of the most important tasks in radar. Arrays of randomly distributed antennas have been popular for this purpose for about half a century.
Strohmer, Thomas, Wang, Haichao
core   +1 more source

EEG alpha/beta features as a biomarker for quantifying pain in patients with lumbar disk herniation

open access: yesFrontiers in Neuroscience
IntroductionAn objective and precise pain evaluation is of significant clinical value, and electroencephalography as a non-invasive physiological signal has been demonstrated to correlate with subjective pain perception.
Rumei Li   +8 more
doaj   +1 more source

Research relative to weather radar measurement techniques [PDF]

open access: yes
Research relative to weather radar measurement techniques, which involves some investigations related to measurement techniques applicable to meteorological radar systems in Thailand, is reported.
Smith, Paul L.
core   +1 more source

Design of frequency and beam reconfigurable antenna based on encoded reflectors for Wi-Fi and IoT applications

open access: yesAIP Advances
A frequency and beam reconfigurable antenna based on encoded reflectors for Wi-Fi and IoT applications is proposed in this paper. By modifying the traditional Alford antenna, extending the transmission line, adding radiation arms, and loading PIN diodes,
Ziyi Jiao, Yutong Zhao
doaj   +1 more source

On a solution to improve the object detection ability of radars by dynamic polarization method

open access: yesASEAN Journal on Science and Technology for Development, 2017
One of the most importan problems of modern radar is increasing object detection, object distinction ability. In the last years, the used traditional radar signal processing methods are seem to use up.
Nguyen Quoc An
doaj   +1 more source

A simulation study of scene confusion factors in sensing soil moisture from orbital radar [PDF]

open access: yes
Simulated C-band radar imagery for a 124-km by 108-km test site in eastern Kansas is used to classify soil moisture. Simulated radar resolutions are 100 m by 100 m, 1 km by 1km, and 3 km by 3 km.
Dobson, M. C.   +3 more
core   +1 more source

Airborne radar simulation studies of the Denver July 11, 1988 microburst [PDF]

open access: yes
In the simulation program, a wind shear detection Doppler radar was placed in UAL 395 and 236 aircraft and flown along their landing flight paths. The microburst was placed at the appropriate location and intensity corresponding to each aircraft's ...
Bracalente, E. M., Britt, Charles L.
core   +1 more source

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