Results 71 to 80 of about 13,013 (218)

A survey of Direction of Arrival estimation techniques and implementation of channel estimation based on SCME [PDF]

, 2015
© 2015 IEEE. In this paper, basics of Direction of Arrival (DOA) estimation techniques were reviewed along with simulated results. It justifies the pros and cons of each technique.
Barua, S, Ghosa, P, Lam, SC, Sandrasegaran, K, Xing, S   +4 more
core   +1 more source

Gut Microbiome Dysbiosis is Associated With Human T‐Lymphotropic Virus Type 1 (HTLV‐1) Infection and Disease Progression to HTLV‐1‐Associated Myelopathy/Tropical Spastic Paraparesis: A Cross‐Sectional Study

Smart Medicine, Volume 5, Issue 1, February 2026.
We provide the first comprehensive analysis of changes in the gut bacteriome at different clinical stages of HTLV‐1 infection. HTLV‐1 infection is associated with a dysbiosis that includes reduced bacterial diversity and an inverted Firmicutes/Bacteroidetes ratio.
Lorena Abreu Fernandes, Ana Olivia de Souza, Youko Nukui, Rosa Maria Marcusso, Augusto César Penalva de Oliveira, Jorge Casseb, Patricia Bianca Clissa, Silas G. Villas‐Boas, Sabri Saeed Sanabani   +8 more
wiley   +1 more source

Spatial time-frequency distribution of cross term-based direction-of-arrival estimation for weak non-stationary signal

EURASIP Journal on Wireless Communications and Networking, 2019
In the radar array signal processing direction of arrival (DOA), the estimation of weak non-stationary signal is an important and difficult problem when both strong and weak signals are coexisting particularly because the weak non-stationary signals are ...
Shuai Shao, Aijun Liu, Changjun Yu, Hongjuan Yang, Yong Li, Bo Li   +5 more
doaj   +1 more source

Compressive Sensing for MIMO Radar

, 2009
Multiple-input multiple-output (MIMO) radar systems have been shown to achieve superior resolution as compared to traditional radar systems with the same number of transmit and receive antennas.
Petropulu, Athina P., Poor, H. Vincent, Yu, Yao   +2 more
core   +1 more source

Spatiotemporal Assessment of the TEMPO Formaldehyde Column Retrieval Using the Pandonia Global Network

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Launched in April 2023, the Tropospheric Emissions: Monitoring of Pollution (TEMPO), instrument provides for the first time hourly measurements of atmospheric pollutants over most of North America at high spatial resolution (∼2 × 4.75 km2).
Prajjwal Rawat, Katherine R. Travis, Barron Henderson, James H. Crawford, Laura M. Judd, Mary Angelique G. Demetillo, Tabitha C. Lee, David E. Flittner, James J. Szykman, Lukas C. Valin, Andrew Whitehill, Eric Baumann, Thomas F. Hanisco, Apoorva Pandey, Gonzalo Gonzalez Abad, Caroline R. Nowlan, Xiong Liu, Kelly Chance   +17 more
wiley   +1 more source

Regularised Hyper Parameter Bi Level Optimisation With Continual Learning Based Deep Neural Network for Beamforming in Ultra‐Wide Band System

IET Communications, Volume 20, Issue 1, January/December 2026.
This research proposes a Regularised Hyperparameter Bilevel Optimisation with Continual Learning‐based Deep Neural Network (RHBO‐CLDNN) for beamforming in an Ultra‐Wide Band (UWB) system. The RHBO ensures the hyperparameter efficiency at both upper and lower levels, which allows DNN to fine‐tune the unique characteristics of the UWB system, which leads
Pradeep Kumar Siddanna, Bidare Divakarachari Parameshachari, Dharmanna Shivappa Lamani   +2 more
wiley   +1 more source

Low‐Complexity DOA Estimation: Combining VSSLMS With FFT Spectrum Estimation

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter presents a novel, low‐complexity framework for DOA estimation. The proposed method achieves a significant reduction in computational complexity—from O(ML) to O(M log L)—compared to conventional SSE methods. Crucially, as illustrated in the accompanying figure, the method maintains high estimation accuracy, outperforming standard SSE‐based ...
Lei Sun, Ding Ding, Songbai Zhang, Xiao Dai, Chaoyang Xu   +4 more
wiley   +1 more source

2D-DOA Estimation in Multipath Using EMVS Rectangle Array

Remote Sensing, 2023
Electromagnetic vector sensor (EMVS) arrays bring an epochal opportunity for direction finding, as they enable the estimation of two-dimensional direction of arrival (2D-DOA) and polarization characteristics.
Zhe Zhang, Lei Zhang, Han Wang, Junpeng Shi   +3 more
doaj   +1 more source

Loop Matching Pursuit Multistation TDOA Estimation Method Based on Noncircular Signal

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
The existing TDOA estimation methods based on orthogonal matching pursuit only consider the scenario of circular signal and are prone to the degradation of estimation performance due to atom misselection under small samples and low signal‐to‐noise ratio.
Zeyu Wang, Ding Wang, Jiexin Yin, Nae Zheng   +3 more
wiley   +1 more source

Investigation of the Power System Including PV, Super Capacitor and Lithium‐Ion Storage Technologies Under BLDC Motor Load

Battery Energy, Volume 4, Issue 6, November 2025.
The growing industrial and technological advancements, along with increasing population, continuously drive up energy consumption. This study examines the development of a Hybrid Energy Storage System consisting of a lithium‐ion battery and supercapacitor integrated with solar energy, highlighting the system's potential to effectively meet the energy ...
Zeynep Tüfek, Emrah Çetin
wiley   +1 more source