Results 61 to 70 of about 671,317 (227)

A Language‐Guided Multimodal Foundation Model for Zero‐Shot and Multi‐Task Brain Signal Analysis

Advanced Intelligent Systems, EarlyView.
METIS aligns brain signals with natural‐language instructions to enable zero‐shot and multi‐task brain signal analysis. Pretrained on over 70 000 h of EEG and iEEG recordings, it generalizes across sleep stage classification, epilepsy detection, and neurological disorder diagnosis, providing a scalable foundation model for clinically meaningful brain ...
Mingzhi Chen, Yiyu Gui, Guibo Luo, Yuchao Yang   +3 more
wiley   +1 more source

Techniques for homodyne dechirp-on-receive linearly frequency modulated radar [PDF]

, 2011
This thesis presents work done to extend and improve the operation of homodyne dechirp-on-receive linearly frequency modulated radars. First, an investigation of the effect of common phase errors on the point response function of the radar is ...
Middleton, Robert
core   +2 more sources

Constant-Modulus-Waveform Design for Multiple-Target Detection in Colocated MIMO Radar

Sensors, 2019
For improving the performance of multiple-target detection in a colocated multiple-input multiple-output (MIMO) radar system, a constant-modulus-waveform design method is presented in this paper.
Bingfan Liu, Baixiao Chen, Minglei Yang
doaj   +1 more source

Monitoring and assessment for obstructive sleep apnea

FlexMat, EarlyView.
This review systematically classifies Obstructive Sleep Apnea (OSA) monitoring indicators into three categories: physical, biochemical, and electrophysiological indicators, and lists several methods for each category. Abstract Obstructive sleep apnea (OSA) is a common chronic sleep‐disordered breathing disease characterized by recurrent upper airway ...
Yaowen Xu, Feifei Lin, Shujiao Chen, Zhen You, Shujing Zhu, Weiwei Zhao, Qiang Zhao   +6 more
wiley   +1 more source

Ultra‐Fast and Energy‐Efficient PZT Optical Tunable Delay Lines for Programmable Photonic Systems

Laser &Photonics Reviews, EarlyView.
Thin‐film PZT enables optical tunable delay lines that simultaneously offer sub‐nanosecond switching, low propagation loss, and zero‐static‐power programmability. A five‐bit on‐chip delay line provides a maximum delay of 387.5 ps with a resolution of 12.5 ps, while reconfigurable MZI splitting ratios further enable non‐volatile optical arbitrary ...
Cunyu Shi, Chenlei Li, Wei Chen, Shengjie Tang, Tao Shu, Haojie Zhu, Haorui Liu, Yueyang Zhang, Long Zhang, William Shieh, Feng Qiu, Daoxin Dai   +11 more
wiley   +1 more source

Orthogonal Waveforms for Multistatic and Multifunction Radar [PDF]

, 2012
Modern radar include more and more multiple functions and multiple channels as in the case of MPAR (Multifunction Phased Array Radar) and MIMO (Multiple Input Multiple Output) radar. In this context sophisticated waveforms and related processing (
GALATI, GASPARE, De Franco, A., PAVAN, GABRIELE   +2 more
core   +1 more source

Signal design and processing for noise radar

EURASIP Journal on Advances in Signal Processing, 2022
An efficient and secure use of the electromagnetic spectrum by different telecommunications and radar systems represents, today, a focal research point, as the coexistence of different radio-frequency sources at the same time and in the same frequency ...
Gaspare Galati, Gabriele Pavan, Christoph Wasserzier   +2 more
doaj   +1 more source

Cellulose supramolecular ionogel with robust mechanical strength and thermal stability for flexible electronics

Smart Molecules, EarlyView.
In this study, a double‐network cellulose‐polyvinyl alcohol (Cel/PVA) ionogel with a dense supramolecular structure is fabricated via H‐bonding network reconstruction. The Cel/PVA ionogel exhibits outstanding mechanical strength, high ionic conductivity, a wide electrochemical window, and excellent thermal stability, demonstrating its tremendous ...
Wenjuan Wang, Minxin Wang, Changhong Lin, Geyuan Jiang, Jianfei Zhou, Dawei Zhao   +5 more
wiley   +1 more source

Acceleration of parasitic multistatic radar system using GPGPU [PDF]

, 2011
This dissertation details the implementation of PMR [Parasitic Multistatic Radar] signal processing chain in the GPGPU [General Purpose Graphic Processing Units] platform.
John, Mathew
core   +1 more source

Ambiguity and area preserving linear transformations in over‐the‐horizon radar

IET Radar, Sonar & Navigation
The use of recurrent waveforms in over‐the‐horizon radar (OTHR) necessitates techniques for ambiguity resolution and manipulation. This paper provides a number of techniques for manipulating the shape of radar ambiguity functions.
Stephen D. Howard, Van Khanh Nguyen
doaj   +1 more source