Results 31 to 40 of about 3,051 (167)

Deep learning for face detection using matlab [PDF]

, 2020
This project report presents face detection using Convolutional Neural Network algorithm and Deep Learning combination (DCT / DL) throughout MATLAB simulation and modeling.
Slim, Salim Adnan
core  

Ionospheric response to AGW propagation detected using GNSS measurements and coherent sounding over “Vernadsky” and “Palmer” Antarctic stations

Український антарктичний журнал, 2017
The work presents results of the diagnostics of travelling ionospheric disturbances (TIDs) over the Antarctic Peninsula obtained by using two different techniques. The first method is based on ground-based multi- positional GNSS TEC measurements, and the
A. A. Sopin, Yu. M. Yampolski, V. V. Paznukhov, S. B. Kascheev, A. V. Koloskov, I. I. Pikulik, A. V. Zalizovski, A. S. Kashcheyev   +7 more
doaj   +1 more source

Combinational frequencies of HF doppler radar signals in the PC1 geomagnetic pulsation range

Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2020
Urgency. The urgency of this work is determined by the necessity of studying MHD waves originating from various sources within the Earth–atmosphere–ionosphere– magnetosphere system and arriving at ionospheric heights. The object of research.
V. F. Pushin, L. F. Chernogor
doaj   +1 more source

MONITORING OF REGULAR AND SPORADIC IONOSPHERIC VARIATIONS ON THE SINGLE-HOP HF RADIO PATHS [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: Diagnostics of regular and sporadic ionospheric variations using coherent systematic monitoring of spectral characteristics of the probe HF signals on the inclined singlehop radio paths.
A. I. Reznychenko, A. V. Koloskov, Y. M. Yampolski   +2 more
doaj   +1 more source

Software and hardware system of multi-frequency oblique sounding the ionosphere

Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2020
Background. The ionosphere was and will be the main channel for the propagation of radio waves of various bands (from extremely low to super-high frequencies).
L. F. Chernogor, K. P. Garmash, Y. H. Zhdanko, S. G. Leus, V. A. Podnos   +4 more
doaj   +1 more source

Propagation characteristics of sporadic E and medium-scale traveling ionospheric disturbances (MSTIDs): statistics using HF Doppler and GPS-TEC data in Japan

Earth, Planets and Space, 2022
We carried out a statistical analysis of the propagation characteristics of Es and Medium-Scale Traveling Ionospheric Disturbances (MSTIDs) by combining data of HF Doppler (HFD) sounder and Total Electron Content (TEC) obtained from the GPS receivers of ...
Ryo Matsushima, Keisuke Hosokawa, Jun Sakai, Yuichi Otsuka, Mitsumu K. Ejiri, Michi Nishioka, Takuya Tsugawa   +6 more
doaj   +1 more source

The use of GPS-arrays in detecting shock-acoustic waves generated during rocket launchings [PDF]

, 2000
This paper is concerned with the form and dynamics of shock-acoustic waves (SAW) generated during rocket launchings. We have developed a method for determining SAW parameters (including angular characteristics of the wave vector, and the SAW phase ...
A.V. Plotnikov, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Arendt, Bertel, Blanc, Calais, Calais, Calais, Calais, Davies, E.A. Kosogorov, E.L. Afraimovich, Fitzgerald, Hofmann-Wellenhof, Jacobson, Jacobson, Karlov, Kaschak, Klobuchar, Li, Mendillo, Mendillo, Mercier, N.P. Perevalova, Nagorsky, Nagorsky, Noble   +29 more
core   +2 more sources

Observations of traveling ionospheric disturbances driven by gravity waves from sources in the upper and lower atmosphere [PDF]

Annales Geophysicae
The observed traveling ionospheric disturbances (TIDs) are attributed to atmospheric gravity waves generated by auroral sources in the lower thermosphere or gravity waves generated in the troposphere by midlatitude weather systems.
P. Prikryl, D. R. Themens, D. R. Themens, J. Chum, S. Chakraborty, R. G. Gillies, J. M. Weygand   +6 more
doaj   +1 more source

Traveling wave packets of total electron content disturbances as deduced from global GPS network data

, 2002
We identified a new class of mid-latitude medium-scale traveling ionospheric disturbances (MS TIDs), viz. traveling wave packets (TWPs) of total electron content (TEC) disturbances.
Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Al'perovich, Baker, Bertin, Bertin, Davies, Davies, Duffus, E.L. Afraimovich, Francis, Hines, Hines, Hocke, Hung, Jacobson, Jacobson, Kalikhman, Kersly, Klobuchar, Klostermeyer, Mannucci, Mercier, Mercier, N.P. Perevalova, Okuzawa, Oliver, Otsuka, Rishbeth, S.V. Voyeikov, Saito, Saito, Shan, Shiokawa, Skone, Skone, Somsikov, Spoelstra, Stobie, Velthoven, Waldock, Waldock, Waldock, Yakovets   +51 more
core   +1 more source

Food security dynamics in Oman: VECM approach [PDF]

, 2020
The paper examines the determinants of food security in Oman during the period 1980-2019. It investigates the influence of population growth rate and GDP per capita on food security.
Devesh, Sonal, M. Asrul Affendi, Abdullah   +1 more
core