Results 51 to 60 of about 5,499 (216)

Application of Sparse Representation to Bartlett Spectra for Improved Direction of Arrival Estimation

Sensors, 2020
A new technique for high-resolution direction of arrival estimation is presented. The method utilizes the traditional Bartlett spectra and sparse representation to locate emitters in single and multiple emitter scenarios.
Jacob Compaleo, Inder J. Gupta
doaj   +1 more source

Angle of arrival estimation for broadband signals : a comparison

, 2013
This paper reviews and compares three different linear algebraic signal subspace techniques for angle of arrival estimation. These include a polynomial matrix approach to multiple signal classification (MUSIC), a parameterised spatial covariance matrix ...
Weiss, Stephan, S. Weiss, J.G. McWhirter, McWhirter, John G., S. Lambotharan, S. Redif, Lambotharan, Sangarapillai, M. Alrmah, Alrmah, Mohamed Abubaker, Redif, Soydan   +9 more
core   +1 more source

A Novel Method for DOA and Time Delay Joint Estimation in Multipath OFDM Environment

International Journal of Antennas and Propagation, 2020
Joint time delay and direction of arrival estimation based on uniform linear arrays in Orthogonal Frequency Division Multiplexing (OFDM) systems has to face the problems posed by coherent multipath environments and high computational complexity.
Xiangzhi Li, Weijia Cui, Haiyun Xu, Bin Ba, Yankui Zhang   +4 more
doaj   +1 more source

Accurate angle-of-arrival measurement using particle swarm optimization

, 2010
As one of the major methods for location positioning, angle-of-arrival (AOA) estimation is a significant technology in radar, sonar, radio astronomy, and mobile communications.
Ho, Kwok Shun, Hayward, G., Minghui Li, Kwok Shun Ho, Gordon Hayward, Li, M.   +5 more
core   +1 more source

A Distributed Sensor-based Recursive Framework for DoA Estimation and Geolocation [PDF]

This paper proposes a distributed sensor-based RECursive Subspace and Factor Graph (RECSaFG) framework for direction-of-arrival (DoA) estimation and geolocation of a fast-moving target.
Matsumoto, Tad, Jun-Ichi Takada, Nopphon Keerativoranan, Jiang, Lei, Keerativoranan, Nopphon, Takada, Jun-ichi, Tad Matsumoto, Lei Jiang   +7 more
core   +1 more source

Adaptive Based Beamforming for Direction-of- Arrival (DOA) Estimation

CVR Journal of Science & Technology, 2015
Nowadays mobile users require increased coverage, quality of service and capacity in wireless communications. By using adaptive antennas at both transmitter and receiver in wireless communication, we can easily reach the required improvement. In this paper Adaptive Antenna plays a major role to improve the performance of wireless communication systems.
openaire   +2 more sources

Performance evaluation of direction-of-arrival (DOA) estimation algorithms for mobile communication systems [PDF]

VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026), 2002
Spatial filtering for mobile communications has attracted a lot of attention over the last decade and is currently considered a very promising technique that will help future cellular networks achieve their ambitious goals. One way to accomplish this is via array signal processing with algorithms which estimate the direction-of-arrival (DOA) of the ...
Al Midfa, KOM, Tsoulos, G, Nix, AR
openaire   +1 more source

Association between multiple‐ambulance dispatches and clinical outcomes for patients with dispatcher‐unrecognized out‐of‐hospital cardiac arrests

Hong Kong Journal of Emergency Medicine, Volume 33, Issue 3, June 2026.
Abstract Background Out‐of‐hospital cardiac arrests (OHCAs) are an important global health burden, and risk factors for patients with dispatcher‐unrecognized OHCAs have not yet been well investigated. Objectives The purpose of this study was to evaluate the association between multiple‐ambulance dispatches and clinical outcomes in patients with ...
Min Seol Seo, Ki Hong Kim, Tae Han Kim, Jeong Ho Park, Joo Jeong, Young Sun Ro, Ki Jeong Hong, Kyoung Jun Song, Sang Do Shin   +8 more
wiley   +1 more source

GPUMDkit: A User‐Friendly Toolkit for GPUMD and NEP

Materials Genome Engineering Advances, Volume 4, Issue 2, June 2026.
GPUMDkit is a comprehensive and user‐friendly toolkit for GPUMD and NEP programs, integrating format conversion, structure sampling, property calculation, and visualization into a unified interface, substantially lowering the barrier to entry for machine‐learning molecular dynamics simulations with GPUMD and NEP.
Zihan Yan, Denan Li, Xin Wu, Zhoulin Liu, Chen Hua, Boyi Situ, Hao Yang, Shengjie Tang, Benrui Tang, Ziyang Wang, Shangzhao Yi, Huan Wang, Dian Huang, Ke Li, Qilin Guo, Zherui Chen, Ke Xu, Yanzhou Wang, Ziliang Wang, Gang Tang, Shi Liu, Zheyong Fan, Yizhou Zhu   +22 more
wiley   +1 more source

Multi‐Species Constraints Resolve Methane Source Versus Sink Changes: Lessons From 2020

Earth's Future, Volume 14, Issue 6, June 2026.
Abstract Satellite observations show that atmospheric methane (CH4) increased by a record‐breaking 19 ppb in 2020, but the causes are unclear because of uncertain impacts from COVID‐related pollutant shifts on hydroxyl (OH) radical concentrations. Here we employ an ensemble of constraints to simultaneously quantify methane sources and sinks for 2020 in
Xueying Yu, Dylan B. Millet, Daven K. Henze, Helen Worden, Corinne Vigouroux, Prabir Patra, Jason D. Hill, Robert B. Jackson   +7 more
wiley   +1 more source