Results 91 to 100 of about 1,048,413 (261)

Micro‐motion parameters extraction of rotating target based on analytical solution in vortex electromagnetic wave radar

open access: yesIET Radar, Sonar & Navigation
The linear Doppler effect and angular Doppler effect in vortex electromagnetic wave radar echoes can be used to extract comprehensive micro‐motion parameters.
Hang Yuan   +5 more
doaj   +1 more source

AAV Parameters Estimation Based on Improved Time-Frequency Ridge Extraction and Hough Transform

open access: yesIEEE Access
The micro-Doppler effect caused by the rotation of autonomous aerial vehicle (AAV) rotors plays a crucial role in AAV detection and identification, as it can reflect the micro-movement characteristics of the target, enabling the estimation of the blade ...
Yongji Yu, Yonghong Ruan, Junjie Zhong
doaj   +1 more source

Flexible wearable electronics for cardiovascular monitoring from surface signals to deep physiological insights

open access: yesFlexMat, EarlyView.
This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen   +5 more
wiley   +1 more source

Micro-Resonator Optical Frequency Combs for Photonic Doppler Velocimetry [PDF]

open access: yes, 2018
Author Institution: University of Nevada, Las Vegas; Nevada National Security SiteSlides presented at the 2018 Photonic Doppler Velocimetry (PDV) Users Workshop, Drury Plaza Hotel, Santa Fe, New Mexico, May 16-18 ...
Sun, Ke-Xun (Kevin)
core  

Radar detectability of light aircraft micro‐Doppler modulation

open access: yesIET Radar, Sonar & Navigation
The critical role of specifying micro‐Doppler mode performance in the modelling and development of modern radar systems is investigated. The authors focus on the detection of micro‐Doppler modulation from light aircraft, analysing data from eight ...
Robert John Berndt   +3 more
doaj   +1 more source

Research progress on the use of the optical coherence tomography system for the diagnosis and treatment of central nervous system tumors

open access: yesIbrain, Volume 11, Issue 1, Page 3-18, Spring 2025.
With the advantages of high‐resolution imaging, efficient image acquisition, intraoperative real‐time detection, and radiation‐free and noninvasive characteristics, optical coherence tomography (OCT) provides accurate diagnosis and effective intraoperative guidance for the minimally invasive diagnosis and treatment of central nervous system (CNS ...
Jiuhong Li   +10 more
wiley   +1 more source

Radar target micro-doppler signature classification

open access: yes, 2008
This thesis reports on research into the field of Micro-Doppler Signature (μ-DS) based radar Automatic Target Recognition (ATR) with additional contributions to general radar ATR methodology.
Smith, G.E.
core  

Perceptions and experiences of midwives' regarding the use of the labor care guide at two state hospitals in Khomas region, Namibia

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract The labor care guide (LCG) is a new tool for monitoring labor, introduced to replace the partograph, which had been used improperly and inconsistently across various contexts. Early research suggests that healthcare practitioners view the LCG as a tool that enhances the quality of care during labor and delivery.
Amalia N. N. Ilonga   +1 more
wiley   +1 more source

A Quality Control Concept for Radar Reflectivity, Polarimetric Parameters, and Doppler Velocity [PDF]

open access: yes, 2006
Over the last few years the use of weather radar data has become a fundamental part of various applications like rain-rate estimation, nowcasting of severe weather events, and assimilation into numerical weather prediction models.
Friedrich, Katja   +2 more
core   +1 more source

Review of Recent Trends in Sensing Methodologies and AI Techniques for Non-Cooperative Aerial Target Recognition [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences
The proliferation of non-cooperative aerial targets, particularly low altitude-slow-speed small RCS drones, presents a complex challenge for airspace security.
Arvind Rawat   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy