Results 81 to 90 of about 9,691 (222)
DOA estimation of wideband LFM RADAR signals
, 2019 Direction of arrival (DOA) estimation of wideband nonstationary pulsed linear frequency modulated (LFM) signals with high chirp rates is challenging for real-time implementation.DOA estimation of such signals within a broad operational spectrum in real ...
Kaushik, M. +13 more
core +1 more source
Applied Sciences, 2020 In supporting communications with unmanned aerial vehicles (UAVs) as aerial user equipments (aUEs) in cellular systems, the current beamforming schemes based on channel state estimation are facing severe challenges from the pilot contamination effect ...
Tianxiao Zhao +5 more
doaj +1 more source
A compact AWPC antenna for DOA estimation [PDF]
2012 International Symposium on Communications and Information Technologies (ISCIT), 2012 Antennas without phase center (AWPC) have been used for Direction-of-Arrival estimation. However, these structures, being symmetric, always face the whole-space ambiguity problem. This paper proposes a new asymmetric AWPC structure for DOA estimation that is able to resolve the ambiguity in the whole space.
Tran Thi Thuy Quynh +3 more
openaire +1 more source
British Journal of Pharmacology, EarlyView.Abstract Background and Purpose D‐amino acid oxidase (DAO) has been developed as a chemogenetic tool, to precisely manipulate redox levels in tissues and cells by generating H2O2 in the presence of D‐amino acids. The enzyme's significant oxygen consumption during H2O2 production may influence cellular oxygen levels.
Wiebke Maurer +10 more
wiley +1 more source
IET Signal Processing, 2022 Time‐modulated arrays (TMAs) have been widely studied owing to their convenient control mode and simple structure. Although direction‐of‐arrival (DOA) estimation based on TMA has garnered considerable attention, underdetermined DOA estimation in TMA is ...
Yue Ma, Chen Miao, Yue‐Hua Li, Wen Wu
doaj +1 more source
Political Partisanship and State‐Level Bank Efficiency
Financial Review, EarlyView.ABSTRACT We examine the relationship between political partisanship and commercial bank efficiency in the United States from 1972 to 2020, assessing the persistent influence of political affiliations at the state and District of Columbia levels. Bank efficiency scores are estimated using a double‐bootstrap approach, and the analysis is conducted within
Jeremy Eng‐Tuck Cheah +3 more
wiley +1 more source
Direction-of-arrival estimation under spatial sparse angular and Doppler domains
工程科学学报, 2015 The method of receiving the antenna array vector was proposed under the sparse angle domain and Doppler domain.The direction-of-arrival(DOA) estimation problem in the Doppler frequency domain was discussed to extract the relatively large impulse response
LIU Ting, ZHOU Jie, SHAO Gen-fu
doaj +1 more source
Bioelectromagnetics, Volume 47, Issue 5, July 2026.ABSTRACT This study investigated the potential impact of fifth‐generation (5 G) radiofrequency (RF) on the autonomic nervous system (ANS). Electrocardiograms (n = 43) and salivary samples (n = 33) were collected from healthy young volunteers before, during, and after exposure to a 3.5 GHz frequency (electrical field intensity ~1–2 V/m) emitted by an ...
Jamal Layla +9 more
wiley +1 more source
DoA estimation via unlimited sensing
, 2020 Direction-of-arrival (DoA) estimation is a mature topic with decades of history. Despite the progress in the field, very few papers have looked at the problem of DoA estimation with unknown dynamic range.
Krahmer, Felix +3 more
core
Underdetermined DOA Estimation Using MVDR-Weighted LASSO [PDF]
, 2016 The direction of arrival (DOA) estimation problem is formulated in a compressive sensing (CS) framework, and an extended array aperture is presented to increase the number of degrees of freedom of the array.
M. Ahmad, Amgad Salama, M. Swamy
core +2 more sources