Results 71 to 80 of about 23,415 (245)
WFH: A Wideband Frequency Hopping‐Based Anti‐Jamming Navigation Signal Structure
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.Given the limitations of existing satellite navigation signals in antijamming performance amid growing environmental jamming, this paper proposes a navigation signal structure based on wideband frequency hopping (WFH) modulation to enhance both antijamming capability and measurement accuracy. It further introduces the nonstationary effective carrier‐to‐
Chenyang Wang +4 more
wiley +1 more source
IET Microwaves, Antennas & PropagationIn this paper, we propose a Double Pulse‐based Dual Coprime Frequency Diverse Array Multiple Input Multiple Output (DCFDA‐MIMO) radar for enhanced target parameter estimation, including range, angle, and Doppler.
Umair Hafeez Khan +4 more
doaj +1 more source
Drone Detection with Chirp‐Pulse Radar Based on Target Fluctuation Models
ETRI Journal, 2018 This paper presents a pulse radar system to detect drones based on a target fluctuation model, specifically the Swerling target model. Because drones are small atypical objects and are mainly composed of non‐conducting materials, their radar cross ...
Byung‐Kwan Kim +7 more
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Dynamic Response of Spherically Curved Laminated Plate Subjected to Sudden Loading
Journal of Engineering, Volume 2026, Issue 1, 2026.This study investigated the dynamic response of simply supported spherical laminated composite plates with square vertices, composed of graphite/epoxy material, under sudden loading. The research examined the influence of stacking sequence, thickness variation, and type of loading using the finite element method (FEM).
Salih N. Akour +2 more
wiley +1 more source
Identification of Parametric Underspread Linear Systems and Super-Resolution Radar
, 2010 Identification of time-varying linear systems, which introduce both time-shifts (delays) and frequency-shifts (Doppler-shifts), is a central task in many engineering applications.
Kfir Gedalyahu +3 more
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Monitoring Bridge Vibrations via Spaceborne SAR Micro‐Doppler
Structural Control and Health Monitoring, Volume 2026, Issue 1, 2026.The advent of Synthetic Aperture Radar (SAR) imaging has presented the possibility of remote monitoring of civil infrastructure on a large scale. Although well established for observing slow and long‐term phenomena, its application to vibration‐based structural health monitoring (SHM) remains relatively unexplored in the current literature.
Alessandro Lotti +8 more
wiley +1 more source
Short-Range Noncontact Sensors for Healthcare and Other Emerging Applications: A Review
Sensors, 2016 Short-range noncontact sensors are capable of remotely detecting the precise movements of the subjects or wirelessly estimating the distance from the sensor to the subject.
Changzhan Gu
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Observations of thunder with the Arecibo VHF radar [PDF]
, 1986 An experiment was carried out at the Arecibo Observatory in Puerto Rico in August 1985 to study Doppler velocities in a thunderstorm environment with a beam pointed 2.5 degrees off-vertical.
Holden, D. N., Larsen, M. F.
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Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.Abstract Valley region irregularities (VRIs) have been previously investigated using radar, ionosonde, and rocket‐borne in situ observations. In this paper, based on a joint observational experiment by lidar and radars performed in Hainan, China, we report a case of low‐latitude VRIs generated in association with uplifted metallic ions for the first ...
Jing Jiao +13 more
wiley +1 more source
Range and Velocity Estimation of Moving Targets Using Multiple Stepped-frequency Pulse Trains
Sensors, 2008 Range and velocity estimation of moving targets using conventional steppedfrequencypulse radar may suffer from the range-Doppler coupling and the phasewrapping.
Ying-Ning Peng +3 more
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