Results 1 to 10 of about 46,496 (224)

First-Order Peaks Determination for Direction-Finding High-Frequency Radar

Journal of Marine Science and Engineering, 2020
Direction-finding (DF) high-frequency radar (HFR) is preferred among the HFR family and is widely used around the world due to its compact structure.
Yeping Lai, Yuhao Wang, Hao Zhou
doaj   +1 more source

Network effects of Stanford Neuromodulation Therapy (SNT) in treatment-resistant major depressive disorder: a randomized, controlled trial

Translational Psychiatry, 2023
Here, we investigated the brain functional connectivity (FC) changes following a novel accelerated theta burst stimulation protocol known as Stanford Neuromodulation Therapy (SNT) which demonstrated significant antidepressant efficacy in treatment ...
Jean-Marie Batail, Xiaoqian Xiao, Azeezat Azeez, Claudia Tischler, Ian H. Kratter, James H. Bishop, Manish Saggar, Nolan R. Williams   +7 more
doaj   +1 more source

An Alternative Approach for Angle of Arrival Estimation [PDF]

Engineering and Technology Journal, 2015
The Multiple Signal Classification (MUSIC) algorithm is the most popular algorithm to estimate the Angle of Arrival (AOA) of the received signals. This algorithm is based on the calculation of thermal noise Eigen values and their corresponding Eigen ...
Bassim Sayed Mohammed
doaj   +1 more source

A Simple Printed Cross-Dipole Antenna with Modified Feeding Structure and Dual-Layer Printed Reflector for Direction Finding Systems

Sensors, 2021
In this paper, a simple printed cross-dipole (PCD) antenna to achieve a right-hand circular polarization (RHCP) at the L/S-band for direction finding (DF) systems is presented.
Kyei Anim, Bonghyuk Park, Hui Dong Lee, Seunghyun Jang, Sunwoo Kong, Young-Bae Jung   +5 more
doaj   +1 more source

Deep Neural Network Model of Ultrafast 2D Direction‐of‐Arrival Estimation Using Planar Arrays for Multi‐Octave‐Band Digital Receiver Applications

IET Radar, Sonar & Navigation
This study presents a deep neural network (DNN) model for multi‐octave‐band direction‐finding (MOB‐DF) estimation using a broadband DF‐array and multi‐layer perceptron (MLP).
Chen Wu, Qi Er Teng, Raffi Fox
doaj   +1 more source

Combined phase-difference and amplitude-comparison technique for Wi-Fi direction-finding with high angular sensitivity and ambiguity mitigation in a wide field of view

Results in Engineering
An interferometric antenna system for Wi-Fi direction finding (DF) using only two directive tilted antennas, is proposed in this work. Typically, more than two receiver chains are needed to obtain high angular sensitivity, with a distance between ...
M. Hutar, J.A. López-Pastor, A. Gil-Martínez, P. Brida, J.L. Gómez-Tornero   +4 more
doaj   +1 more source

High sensitivity multi‐channel digital receiver for wideband very weak signal direction‐finding classified by machine learning

IET Radar, Sonar & Navigation
For weak signal detection with direction‐finding (DF), this article presents a new receiver design approach that combines our accumulatively increasing receiver sensitivity (AIRS) signal detection algorithm with the compressive‐sensing (CS)‐based DF ...
Chen Wu, Michael Low
doaj   +1 more source

Two-Dimensional Direction-of-Arrival Estimation With a SODA-Based 3D Array

IEEE Access
In this work, we evaluate the efficiency of different one-dimensional and two-dimensional multiple signal classification (MUSIC) scenarios in direction-finding (DF) for the azimuth and the elevation angles through the Monte Carlo simulations. In addition,
Sarah Poormohammad, Seyed Sadra Kashef, Hamid Arezumand   +2 more
doaj   +1 more source

2D DOA Estimation of UCA Correlative Interferometer Based on One Dimensional Sorting Lookup Table-Two Dimensional Linear Interpolation Algorithm [PDF]

Radioengineering, 2017
In order to improve the direction-finding efficiency of the correlative interferometer and reduce the size of the lookup table, this paper proposes the one dimensional sorting lookup table-two dimensional linear interpolation (1DSLUT-2DLI) algorithm ...
K. B. Cui, W. W. Wu, J. J. Huang, X. Chen, N. C. Yuan   +4 more
doaj  

Arrival direction finding for narrow-band auroral hiss at Syowa Station

Antarctic Record, 1982
From the direction finding (DF) observations based on the measurement of wave arrival time differences among three spaced points around Syowa Station (geomagnetic lat. -70.0°), the arrival direction of narrow-band auroral hiss was examined.
Masanori Nishino, Yoshihito Tanaka, Takeo Hirasawa   +2 more
doaj   +1 more source