Results 51 to 60 of about 507,465 (200)

Usefulness of VRML building models in a direction finding context [PDF]

, 2007
This paper describes an experiment which aims to examine the effectiveness and efficiency of a Virtual Reality Modelling Language (VRML) building model compared with equivalent architectural plans, for direction finding purposes.
Mackey, D, Murano, P
core   +1 more source

Unusual microwave response and bulk conductivity of very thin fese0.3te0.7 films as a function of temperature

, 2014
Results of X-band microwave surface impedance measurements of FeSe1-xTex very thin film are reported. The effective surface resistance shows appearance of peak at T less and near Tc when plotted as function of temperature.
A. A. Barannik, A. Porch, Alireza P. L., Barannik A., Barannik A. A., Cardwell D. A., Han Y., M. S. Kharchenko, N. T. Cherpak, Sheng Luo, Shibauchi T., Yun Wu, Yusheng He   +12 more
core   +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 shape classification and retrieval [PDF]

, 2005
We present a novel correspondence-based technique for efficient shape classification and retrieval. Shape boundaries are described by a set of (ad hoc) equally spaced points – avoiding the need to extract “landmark points”.
McNeill, Graham, Vijayakumar, S.
core   +1 more source

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

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

, 2016
Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME combining white ...
Bale, SD, Barnes, D, Bonnin, X, Bothmer, V, Davies, JA, Eastwood, JP, Krupar, V, Kruparova, O, Magdalenić, J, Maksimovic, M, Mrotzek, N, Oliveros, JCM, Pluta, A, Santolik, O, Soucek, J, Vourlidas, A   +15 more
core   +3 more sources

A New Design Approach to Multi-Octave 2D Omnidirectional Direction-Finding Array With Multi-Band Deep Neural Network Models

IEEE Access
This paper focuses on presenting a new design methodology for a multi-octave omnidirectional direction-finding (MOOD-DF) array tailored for ultra-wideband digital receivers operating across a broad spectrum, e.g., 2 to 18 GHz.
Chen Wu, Qi Er Teng
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  

APPLICATION OF DISTRIBUTED ANTENNA SYSTEMS FOR DETERMINATION OF RADIATION SOURCE COORDINATES WITH USE OF PHASE METHOD IN FRESNEL ZONE

Information and Telecommunication Sciences, 2017
Background. Talking about evolution of passive radar systems and multifunction antenna systems, it is necessary to acknowledge that distributed antenna systems (DAS) are supposed to be widely spread in the very near future in many areas of human activity,
Gleb Avdeyenko, Evgeniy Yakornov
doaj   +1 more source

Neighbors of knots in the Gordian graph

, 2016
We show that every knot is one crossing change away from a knot of arbitrarily high bridge number and arbitrarily high bridge distance.Comment: Accepted by American Mathematical Monthly.
Blair, Ryan, Campisi, Marion, Johnson, Jesse, Taylor, Scott A., Tomova, Maggy   +4 more
core   +1 more source