Results 81 to 90 of about 47,507 (304)
Direction finding of correlated sources in extremely low SNR environment [PDF]
Journal of Engineering Science and Military TechnologiesDirection-Finding (DF) in low Signal-to-Noise Ratio (SNR)environments presents challenges in accurate Angle-of-Arrival (AOA)estimation, resolution, and maximum detection range due to extrinsicsources and hardware imperfections, particularly when dealing ...
Osama Elkasrawi +3 more
doaj +1 more source
Mitigation Of Wing Flexure Induced Errors For Airborne Direction Finding Applications
, 2007 . Calibration errors are the dominant error source for direction finding (DF) from airborne platforms. Calibration of the array manifold is done with the wings in an unknown position.
Kjell Gustafsson
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Advanced Materials, EarlyView.SPARC (spatio‐chimeric, plasma‐based, anisotropic, and shear‐responsive construct) that integrates myogenic and vascular microenvironments within a single construct. The dual‐modulus matrix directs aligned myotube formation and endothelial network development, enabling a vascularized muscle implant that seamlessly anastomoses with host tissue and ...
Su Hyun Jung +6 more
wiley +1 more source
, 2005 A radio direction finding (DF) system is an antenna array and a receiver arranged in a combination to determine the azimuth angle of a distant emitter. Basically, all DF systems derive the emitter location from an initial determination of the angle-of ...
Keaveny, John Joseph
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Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment
Advanced Materials, EarlyView.ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud +31 more
wiley +1 more source
DSSS detection and direction finding methods for a DSP-based small aperture DF system
, 2005 Includes bibliographical references (leaves 77-79).This dissertation discusses an investigation into methods for detection and direction finding of direct-sequence spread-spectrum signals (DSSS), appropriate for a particular DSP-based direction finding ...
Durrett, David
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Advanced Materials, EarlyView.This study presents a compact dynamic‐field‐driven nucleation and growth (DFNG) model that captures ferroelectric switching behavior under arbitrary voltage waveforms. It enables extraction of time‐dependent domain wall velocity and growth dimensionality, which can then be extended to device‐level modeling.
Yi Liang +10 more
wiley +1 more source
Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing
Advanced Materials Technologies, EarlyView.Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar +5 more
wiley +1 more source
Robust Bluetooth AoA Estimation for Indoor Localization Using Particle Filter Fusion
Applied SciencesWith the growing demand for positioning services, angle-of-arrival (AoA) estimation or direction-finding (DF) has been widely investigated for applications in fifth-generation (5G) technologies.
Kaiyue Qiu +4 more
doaj +1 more source
Low elevation target detection and direction finding
, 2012 Ground based radars often experience difficulties in target detection and direction finding (DF) applications due to the interference between the direct and surface reflected signals when the targets fly at low altitudes.
GÖRKEM UYAR
core