Results 41 to 50 of about 1,600 (182)

A new simulation methodology for generating accurate drone micro‐Doppler with experimental validation

IET Radar, Sonar & Navigation
Unmanned Aerial Vehicles, or drones, pose a significant threat to privacy and security. To understand and assess this threat, classification between different drone models and types is required.
Matthew Moore, Duncan A. Robertson, Samiur Rahman   +2 more
doaj   +1 more source

Extraction of Micro-Doppler Frequency From HRRPs of Rotating Targets

IEEE Access, 2017
Micro-motion dynamics, such as rapid rotation, vibration and spinning motion, impose additional time-varying frequency modulation on the returned radar signals, which is known as the micro-Doppler (m-D) effect.
Xiao-Yi Pan, Jiaqi Liu, Le-Tao Xu, Xia Ai, Qianpeng Xie, Bo Yu, Cheng Li   +6 more
doaj   +1 more source

Enhanced Multi-Channel Feature Synthesis for Hand Gesture Recognition Based on CNN With a Channel and Spatial Attention Mechanism

IEEE Access, 2020
Millimeter-wave (MMW) radar hand gesture recognition technology is becoming important in many electronic device control applications. Currently, most existing approaches utilize the radical and micro-Doppler features from single-channel MMW radar, which ...
Chuan Du, Lei Zhang, Xiping Sun, Junxu Wang, Jialian Sheng   +4 more
doaj   +1 more source

Study on feature processing schemes for deep‐learning‐based human activity classification using frequency‐modulated continuous‐wave radar

IET Radar, Sonar & Navigation, 2021
Radar is an attractive sensor for classifying human activity because of its invariance to the environment and its ability to operate under low lighting conditions and through obstacles.
Rodrigo Hernangómez, Avik Santra, Sławomir Stańczak   +2 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

Ibrain, 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, Ziba Ayi, Gonggong Lu, Haibo Rao, Feilong Yang, Jing Li, Jiachen Sun, Junlin Lu, Xulin Hu, Si Zhang, Xuhui Hui   +10 more
wiley   +1 more source

Channel Attention based CNN for Improving UAV Classification using Micro Doppler Spectogram Images.

ELCVIA Electronic Letters on Computer Vision and Image Analysis
The increase in technological advancements in unmanned ariel vehicle has lead to the challenges in the detection of drones in flight. The micro Doppler signatures obtained from radars is used to distinguish and detect different types of drones.
Mainak Bandyopadhyay, Suddhasattwa Das, Subhankar Mishra   +2 more
doaj   +1 more source

Three‐dimensional Doppler‐associated radar imaging method based on bi‐directional data processing

IET Radar, Sonar & Navigation, 2022
Using a microwave or millimetre wave radar system, this study aims to achieve highly accurate Doppler velocity estimation and radar imaging that would be suitable for various remote‐sensing sensors, such as self‐driving, surveillance, or security ...
Takumi Hayashi, Takeru Ando, Shouhei Kidera   +2 more
doaj   +1 more source

Piezoelectric Materials in Medical Ultrasound: A Comprehensive Review From Fundamentals to Translational Prospects

Information &Functional Materials, EarlyView.
Piezoelectric materials are reviewed as active platforms for medical ultrasound, bridging electromechanical fundamentals, transducer architectures, and biomedical applications. Material–device co‐design is emphasized as the key to high‐performance diagnosis, therapy, monitoring, wearable ultrasound, and emerging ultrasound‐responsive functions ...
Jianan Li, Qing Wan
wiley   +1 more source

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

International 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, Takaedza Munangatire   +1 more
wiley   +1 more source

Renal screening sonography—A comparative study in a Portuguese basic emergency service

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 8-16, March 2025.
Renal sonography screening aids in clinical decision‐making for patients with suspected renal colic. This study intends to compare the accuracy and pertinence of sonographic findings obtained by a sonographer in a Basic Emergency Service (BES) with that of radiologists at Referral Hospital (RH) in Portugal. Renal sonography screening was able to detect
Sérgio Miravent, Carmen Jiménez, Narciso Barbancho, Manuel Duarte Lobo, Teresa Figueiredo, Carla Gomes, Ion Ratusneac, João Mário Gonçalves, Corina Hasnas, Rui de Almeida   +9 more
wiley   +1 more source