Results 51 to 60 of about 19,233 (197)

Research Progress in Methods to Estimate High-resolution Direction of Arrival

水下无人系统学报
With the widespread application of array signal processing, the estimation of direction of arrival(DOA) as the core problem of array signal processing has made significant progress.
Wei ZHAO, Xuan LI, Chengpeng HAO
doaj   +1 more source

Tracking Positioning Algorithm for Direction of Arrival Based on Direction Lock Loop

Future Internet, 2015
In order to solve the problem of poor real-time performance, low accuracy and high computational complexity in the traditional process of locating and tracking of Direction of Arrival (DOA) of moving targets, this paper proposes a DOA algorithm based on ...
Xiu-Zhi Cheng, Da-Rong Zhu, Shen Zhang, Ping He   +3 more
doaj   +1 more source

Transmit Array Interpolation for DOA Estimation via Tensor Decomposition in 2D MIMO Radar

, 2017
In this paper, we propose a two-dimensional (2D) joint transmit array interpolation and beamspace design for planar array mono-static multiple-input-multiple-output (MIMO) radar for direction-of-arrival (DOA) estimation via tensor modeling.
Cao, Ming-Yang, Hassanien, Aboulnasr, Vorobyov, Sergiy A.   +2 more
core   +1 more source

Time-angle ocean acoustic tomography using sensitivity kernels: The forward problem [PDF]

, 2013
International audienceBroadband acoustic signals around 1 kHz propagate through shallow water oceanic waveguides of ~100 m in depth and ~2 km in range as multiple ray-like wavefronts.
Aulanier, Florian, Mars, Jerome,, Nicolas, Barbara, Roux, Philippe   +3 more
core   +3 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, Volume 36, Issue 12, 9 February 2026.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

Direction-of-Arrival Estimation of Virtual Array Signals Based on Doppler Effect

International Journal of Distributed Sensor Networks, 2015
The estimation accuracy of direction-of-departure (DOD) and direction-of-arrival (DOA) is reduced because of Doppler shifts caused by the high-speed moving sources.
Feng Zhao, Xia Hao, Hongbin Chen
doaj   +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

Direction finding for an extended target with possibly non-symmetric spatial spectrum [PDF]

, 2004
We consider the problem of estimating the direction of arrival (DOA) of an extended target in radar array processing. Two algorithms are proposed that do not assume that the power azimuthal distribution of the scatterers is symmetric with respect to the ...
Besson, Olivier, Monakov, Andrei
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

Polarization and DOA Estimation Based on Dual-Polarized Conformal Array

International Journal of Antennas and Propagation, 2019
A dual-polarized multiple signal classification (DP-MUSIC) algorithm is presented to estimate the arrival directions and polarizations for a dual-polarized conformal array.
Chao Liu, Shuai Xiang, Liangfeng Xu, Zhengfei Fang   +3 more
doaj   +1 more source