Results 101 to 110 of about 15,578 (257)

Direction of arrival estimation using combined coprime and nested array

open access: yesElectronics Letters, 2019
A combined coprime and nested array geometry is designed and a corresponding direction of arrival (DOA) method is proposed. The proposed array has three subarrays, where two are prototype coprime subarrays, and both of them are nested to the third one ...
Jianfeng Li, Yunxiang Li, Xiaofei Zhang
doaj   +1 more source

Individuals with Multi‐Joint Osteoarthritis Demonstrate Larger Longitudinal Declines in Frailty: Data from the Canadian Longitudinal Study on Aging

open access: yesArthritis Care &Research, Accepted Article.
Objective Test the hypothesis that multi‐joint osteoarthritis would modify the relation between time and frailty progression, where more affected joints would lead to larger declines over 6‐years compared to those without osteoarthritis using data from the Canadian Longitudinal Study on Aging.
Carson Halliwell   +2 more
wiley   +1 more source

Direction of Arrival Estimation With Low Resolution Quantised Data: A Taxonomy and Survey

open access: yesIET Radar, Sonar & Navigation
This paper presents a comprehensive survey of Direction of Arrival (DoA) estimation techniques that utilise one‐bit and low‐resolution data. We delve into various approaches, including direct application of quantised data to existing DoA estimators and ...
Yasin Azhdari, Mahmoud Farhang
doaj   +1 more source

A Deep Shrinkage Network for Direction-of-Arrival Estimation with Sparse Prior

open access: yesJournal of Marine Science and Engineering
Direction-of-arrival (DOA) estimation of underwater multipath signals plays a indispensable role in both military and civilian underwater applications. Despite its importance, accurately estimating DOA under multipath conditions is challenging due to the
Lei Zhou   +4 more
doaj   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane   +3 more
wiley   +1 more source

Direction of arrival estimation with coprime arrays

open access: yes
Estimation de la direction d’arrivée avec les réseaux coprimes L'estimation de la direction d'arrivée (DOA) des sources avec les réseaux coprimes a été beaucoup étudiée grâce à leurs degrés de liberté (DOFs) élévés et leurs meilleures performances d'estimation.
openaire   +2 more sources

On Forward-Backward Mode For Direction Of Arrival Estimation

open access: yes, 1998
Publication in the conference proceedings of EUSIPCO, Rhodes, Greece ...
Magnus Jansson, Petre Stoica
openaire   +3 more sources

Robust DOA estimation for two‐level nested arrays in unknown mutual coupling

open access: yesElectronics Letters
Aiming at solving the problem that the capability of direction of arrival method for estimation of nested arrays decreases sharply under unknown mutual coupling, an iterative weighted low‐rank matrix reconstruction algorithm is proposed here.
Shun He, Xue Li, Bing Sun
doaj   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

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