Results 101 to 110 of about 230,956 (294)

Interference detection and correction applied to incoherent-scatter radar power spectrum measurement [PDF]

open access: yes, 1986
A median filter based interference detection and correction technique is evaluated and the method applied to the Arecibo incoherent scatter radar D-region ionospheric power spectrum is discussed. The method can be extended to other kinds of data when the
Mathews, J. D.   +2 more
core   +1 more source

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

open access: yesAdvanced 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   +12 more
wiley   +1 more source

Physics‐Embedded Neural Network: A Novel Approach to Design Polymeric Materials

open access: yesAdvanced Science, EarlyView.
Traditional black‐box models for polymer mechanics rely solely on data and lack physical interpretability. This work presents a physics‐embedded neural network (PENN) that integrates constitutive equations into machine learning. The approach ensures reliable stress predictions, provides interpretable parameters, and enables performance‐driven, inverse ...
Siqi Zhan   +8 more
wiley   +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

MST radar detection of middle atmosphere tides [PDF]

open access: yes, 1983
Meteorological and dynamical requirements pertaining to the specification of middle atmosphere tides by the MST radar technique are outlined. Major issues addressed include: (1) the extraction of tidal information from measurements covering a fraction of
Forbes, J. M.
core   +1 more source

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

open access: yesAdvanced 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   +14 more
wiley   +1 more source

Impact analysis of DRFM-based active jamming to radar detection efficiency

open access: yesThe Journal of Engineering, 2019
The influence of DRFM active jamming technology on pulse compression coherent radar is studied here. By establishing radar signal detection model and introducing radar equation, the influence of signal produced by DRFM on the detection performance of ...
Wei Liu, Jin Meng, Liang Zhou
doaj   +1 more source

High Gain Compact UWB Antenna for Ground Penetrating Radar Detection and Soil Inspection. [PDF]

open access: yesSensors (Basel), 2022
Saeidi T   +5 more
europepmc   +1 more source

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