Results 131 to 140 of about 166,282,209 (237)

Direction-of-Arrival Estimation Method Based on Neural Network with Temporal Structure for Underwater Acoustic Vector Sensor Array. [PDF]

Sensors (Basel), 2023
Xie Y, Wang B.
europepmc   +1 more source

Direction-of-arrival estimation in the presence of unknown nonuniform noise fields

, 2006
A new method for estimating directions-of-arrival (DOA) of multiple spatial narrowband signals in the presence of spatially nonuniform independent sensor noise with unknown covariance is presented.
Chaohuan Hou (20223534), Yuntao Wu (37012), Guisheng Liao (12249545), Qinghua Guo (19588207)   +3 more
core   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

Naked eye direction of arrival estimation with a Fresnel lens. [PDF]

Sci Rep, 2022
Vovchuk D, Khobzei M, Filonov D, Ginzburg P.   +3 more
europepmc   +1 more source

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

Advanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki, Lea Holritz, Winnie E. Svendsen   +2 more
wiley   +1 more source

A Covariance Matrix Reconstruction Approach for Single Snapshot Direction of Arrival Estimation. [PDF]

Sensors (Basel), 2022
Muhammad M, Li M, Abbasi Q, Goh C, Imran MA.   +4 more
europepmc   +1 more source

An Explicit Constitutive Reconstruction Framework for Mechanical Characterization of Miniaturized 3D‐Printed Specimens

Advanced Engineering Materials, EarlyView.
An explicit constitutive reconstruction framework enables accurate tensile characterization of miniaturized additively manufactured specimens using only the grip‐to‐grip displacement measurements. Progressive validation through self‐consistency, analytical comparison, and inverse finite element method (iFEM) benchmarking demonstrates constitutive ...
Junqing Leng, Caralyn Collins, Pengpeng Zhang, Joanna Zhang, Cheng Sun   +4 more
wiley   +1 more source

A Novel Approach for Direction of Arrival Estimation in Co-Located MIMO Radars by Exploiting Extended Array Manifold Vectors. [PDF]

Sensors (Basel), 2023
Akbar S, Sohail M, Zaman F, Khan MAR, Ajavakom N, Phanomchoeng G.   +5 more
europepmc   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Direction of arrival estimation via power measurement approach

, 2009
This report showcases the concept on how Direction of Arrival Estimation can be done using the Power Measurement Approach. At the initial stages, the Direction of Arrival estimation software system was created using MATLAB.
Loo, Bernard Weixiong
core